Campus Cosmopolis
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Mark Twain International Bilingual Theoretical High School (Grades 5–12)
Welcomes you!

Preparing tomorrow’s leaders: the IB World School that lights the way to top universities around the world!

  • ✅ Dual accredited curriculum: National Baccalaureate and International Baccalaureate MYP + DP
  • ✅ 2 immersive study divisions: Romanian-English Bilingual and English International
  • ✅ IB Middle Years Programme throughout Grades 5-10
  • ✅ High School specializations: Mathematics-Computer Science / Philology / International
  • ✅ IB Diploma Programme + National Baccalaureate Programme for Grades 11-12
Limited places • Fast scheduling • Response within 24-48 hours

Mark Twain adolescent students, the center of our universe

Here, you matter! You will always be independent and at the center of learning and academic engagement at the same time. Student life in the vibrant MTIS community will truly be unforgettable!

Young people like you, from Romania and from abroad, learn together on our safe and welcoming campus, prepare for university, build lifelong friendships, travel and discover the world, and take part in relevant student-initiated and student-led actions, projects and events, with a strong academic, scientific, cultural, sports, and social impact.

What solution does Mark Twain International Bilingual High School offer you?

Are you looking for a reputable high school with multiple strong accreditations, offering experienced and highly-qualified teachers, an immersive and engaging academic environment, elevated study programmes, and rigorous preparation at both national and international level?

Mark Twain offers teenage students in Grades 5–12 high performing dual bilingual study programmes, integrated according to age, division, and specialisation, within a coherent system of learning, practical application, and progress, supported by constant mentoring, personalised feedback, as well as dedicated counselling for university admission and the next steps after high school.

  • Careful monitoring of each student’s performance and development
  • Active and constant school–family communication
  • Guidance and development of personal skills

A quick glance at MTIS Senior Campus life

Close collaboration between students, teachers, programme coordinators, and school leaders, in a positive and inspiring academic environment.

  • Immersive dual curriculum, international + national
  • Individual attention given to each student
  • Preparation for academic performance and support for deep development or remediation
  • A strategic plan for admission into top university of choice
  • Modern facilities and captivating extracurricular activities
  • An international community defined by diversity, respect, and empathy

Mark Twain International Bilingual High School (Grades 5–12) in Numbers

Want to see the performance of MTIS students, from Primary School to High School Admission and the Dual Baccalaureate? We invite you to check out the results below!


New! Exam Results 2026 Overview

Cambridge English Exam Results 2025

National Evaluation 2025 and Admission Averages for MTIS Bilingual Theoretical High School

Baccalaureate Results 2025 – IB and National

1995
Year of foundation
30+
Years of experience in dual education: National and IB
60+
Student nationalities
Diverse international community
15.000 m²
Green campus + extensive study spaces
40+
Specialized teachers
with teaching degrees, Master’s/PhD, IB experience
200+
Top universities / diverse specialisations in 30 countries
Accessed by our graduates
Book a visit Limited spots

A brief look inside our campus

The atmosphere on campus is always accompanied by the friendly and open spirit of Mark Twainians, as well as by the care and warmth of our teachers

See if Mark Twain International Bilingual High School is suitable for your adolescent ️ ⬇️️

  • Your child is between 11 and 17 years old.
  • You want an IB education (recognized world leader in education) within an accredited national and international programme.
  • You value engaging classes focused on the individual development of each student, as well as on team work.
  • You are looking for expert teachers who are involved and communicative both with the student and with their family.
  • You aspire to a multicultural community that broadens the boundaries of personal development.
  • You are looking for meticulous preparation for university.
  • You appreciate a green and spacious campus, with multiple facilities and advantages for organising school activities

The enrollment process ⬇️

1

Fill in the form

You leave us your contact details, the student’s age, and a few relevant details.

2

We contact you for a discussion

We get back to you to arrange a meeting.

3

Campus visit

We meet, you get a feel for the atmosphere, and we give you all the information you need.

4

We finalize the enrollment

We complete the process with the necessary documents

Let’s get started!
Fill in the form and we will get back to you within 24–48 hours!

WHY CHOOSE MARK TWAIN INTERNATIONAL SCHOOL

The Mark Twain International School educational network upholds a clear mission that sets high standards, demanding practices, and strong principles throughout the students’ educational journey, from 1.5 to 18 years old, constantly placing them at the center of all school efforts and preparing them at the highest level.

🏫

Extensive experience in education

With over 31 years in the private education field, we demonstrate consistency and dedication, vision and innovation, performance and impact.

📚

International community

Students interact and build friendships with people of many nationalities, gaining a multicultural perspective.

🌍

Internationally and nationally certified teachers

In order to meet the requirements of IB education and the rigor of the national system, teachers engage in continuous professional development, adhere to high standards, and apply practical and effective teaching methods that support deep learning.

👩‍🏫

Future orientation

Support in choosing study pathways, high school specializations, the structure of baccalaureate subjects, and, ultimately, the right university, alongside extracurricular projects dedicated to the students’ all-round development throughout their pre-university studies.

What students and parents say about Mark Twain International Bilingual High School

Real experiences about teachers, atmosphere, campus and children's development.

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"Dear teachers, on behalf of all the parents, we would like to express our deep gratitude for the constant support, dedication and care you have offered throughout our children's journey in the IB programme. As they approached one of the most difficult and important stages of their academic life, your guidance, encouragement and tireless efforts were a true source of strength for both them and us. You did not only give them knowledge, but also inspired in them confidence, resilience and a genuine love of learning. We deeply appreciate the time, energy and personal involvement you invested in helping each student reach their potential. Your willingness to answer questions, offer additional support and believe in their success made a great difference. Thank you for walking this path alongside our children and for having such an important role in their development, both academically and personally. The impact you have had will stay with them long after the exams are over."

Parent, Graduate Grade 12
IB Diploma Programme Year II
"

"Mark Twain International School has given me an environment where I feel supported both academically and personally. The teachers are dedicated and always willing to help, making lessons engaging and challenging in a way that motivates me to grow. The school encourages curiosity, critical thinking and independence. What I appreciate most is the international atmosphere and the strong sense of community. Students come from different backgrounds, which makes the learning process more open and more valuable. There is a good balance between academic excellence and personal development. Being part of Mark Twain International School has helped me develop my self-confidence, discipline and sense of responsibility. The opportunities offered, both in class and outside of it, prepare us not only for exams, but also for future success. I am proud to be part of this school."

Shakir, Student Grade 11
IB Diploma Programme Year I
"

"My first year in the IB DP Programme at Mark Twain International School was both challenging and rewarding. From the very beginning, I felt supported by both teachers and classmates, which made the transition into IB much less overwhelming. The curriculum encouraged me to think more critically and to become more independent in my learning process. It was not always easy, but it helped me grow both academically and personally in ways I did not expect. Overall, this experience has shaped my mindset and work ethic, and I am grateful to be part of a school that truly encourages growth and ambition."

Sofia P., Student Grade 11
IB Diploma Programme Year I
"

"As a parent of a 12th Grade graduate, I would like to thank you from the bottom of my heart for all these years of dedication, patience and professionalism. You have been not only teachers, but also guides who shaped characters, encouraged dreams and prepared young people for a future in constant change. Through the education you provided, you gave them not only knowledge, but also essential values for a better society. We are deeply grateful to you! With our great esteem!"

Parent, Graduate Grade 12
IB Diploma Programme Year II
"

"Mark Twain International School welcomed me from the very beginning with open arms, from the teachers to the students. Everyone takes great pleasure in participating in classes and in the everyday experiences that every school should truly offer. The MTIS IB education system is very well organised, student-friendly and combines the arts, creativity and freedom of expression in day to day classes. Since I moved to this school, I have not regretted it at all, because it makes me feel at home thanks to the campus environment and all the positive aspects of the education it offers. In addition, MTIS has the ability to offer students a place of learning where they have a voice and a say."

Radu-Ștefan, Student Grade 11
IB Diploma Programme Year I
"

"Mark Twain International School has a wonderful and clean campus, and the teachers, students and staff are very warm and friendly. The teachers prepare their lessons with meticulousness and responsibility, and their teaching in class is extremely professional, offering clear explanations and detailed development for each concept. The classes are truly engaging and interesting. Mark Twain International School is an excellent place to learn, grow and gain more knowledge and friends. (Fun fact: We recently gave shelter to several stray kittens on campus and we feed and take care of them during breaks, on school days.)"

Zhu, Student Grade 11
IB Diploma Programme Year I
"

"Thank you, dear faculty and team of Mark Twain International High School, for your guidance and heartfelt involvement all these years, and many thanks to the founders and directors for supporting our two children throughout their education. We are immensely proud of our younger child’s recent IB exam results; he demonstrated once again that he learned from the best, achieving the maximum score at the 2025 International Baccalaureate May session! I can only wish everlasting continuity to this wonderful school and to those who lead it.️"

Parent, Graduate Grade 12
IB Diploma Programme Year II
"

"From my perspective, as a student in Grade 9 at Mark Twain International School, it is a remarkable and inspiring school, where I feel appreciated and motivated every day. The teachers are involved and passionate, the atmosphere is welcoming and full of energy, and the school encourages excellence, creativity, confidence and genuine friendships."

Liu, Student Grade 9
IB MYP Programme
Bilingual Sciences Division
Mathematics–IT Pathway
"

"Mark Twain International School gave me a solid academic foundation and the confidence to move forward into high school. The school promotes responsibility, team spirit and open-minded thinking in a truly international environment."

Mihai, Student Grade 9
IB MYP Programme
Bilingual Humanities Division
Philology Pathway
"

"Sincere thanks for the help, support and encouragement offered, for all the work done for our children! Thank you to the IB Diploma Programme Coordinator! Thank you to the entire team of teachers! 🙏"

Parent, Graduate Grade 12
IB Diploma Programme Year II
"

"Since I moved to Mark Twain International School, I feel that I have never been happier in a school environment. It is truly a safe place. Every day when I come to school, I see my classmates hugging and encouraging one another, even if they are not close friends. The teachers are caring, understanding and eager to support us both with school activities and with life advice. This reminds me that I am never alone."

Dalia, Student Grade 9
IB MYP Programme
International Division
"

"For me, Mark Twain International School is more than a school, it is a place where we, the students, feel like we are part of a family. It is like a second home. We spend a big part of our time here and it is important for us to feel well, happy and safe. At Mark Twain, we have well-prepared, involved and understanding teachers, who offer us academic support and also personal advice. I really like the atmosphere this school creates, from the very moment you walk through the gate. I have been part of this community since the age of 5, together with many of my classmates, with whom I have built close friendships. In this environment I have developed and managed to achieve very good results with the support of the teachers and directors, who have constantly guided me on this journey."

Vlad, Student Grade 9
IB MYP Programme
Bilingual Sciences Division
Mathematics–IT Pathway
"

"MTIS Bilingual Theoretical High School is an IB World School that is truly student-centred, the activity is interactive, and modern teaching and learning methods are applied. Thank you to all the involved and dedicated teachers!"

Parent, Graduate Grade 12
IB Diploma Programme Year II
"

"MTIS is an exceptional school. I have made many new friends and I feel very comfortable studying here. The school is truly attentive to the needs of the students and offers numerous opportunities for learning, personal expression, exploration and creativity, the Shakespeare Festival and the charitable social responsibility events being just a few examples of interesting projects."

Kira, Student Grade 9
IB MYP Programme
International Division
"

"Mark Twain International School is a welcoming and diverse institution that blends imagination and creativity. At MTIS, we are happy to have very experienced teachers and to learn in a safe and friendly environment. The teaching methods are beautiful and interactive, and the educational activities are always very interesting. That is why I am proud to be part of a truly wonderful school! 💗"

Ana-Maria, Student Grade 5
IB MYP Programme
Bilingual Division
"

"For our son, who is in the 6th grade, bilingual division, Mark Twain has become a place he is happy to come to every day. We greatly appreciate the warm atmosphere and the respect with which the teachers guide him, as well as how naturally he is developing in English through the interactive activities and classroom projects. We also greatly appreciate the events the school organises — from cultural moments to sports activities — which motivate him and help him discover himself. The modern and friendly campus gives him a sense of safety and belonging. We are grateful that we have found an environment in which our child is growing beautifully, confidently and curiously."

Parent, Student Grade 6
IB MYP Programme
Bilingual Division
"

"MTIS School is wonderful for several reasons: they have extraordinary teachers, patient and always willing to help you, as well as impressive, spacious campuses that are easy to get around. I especially like the English and Mathematics classes, for all the understanding and knowledge I gain in these subjects. I have also been to other schools throughout my life, but this is simply the best of them all!"

Sarah, Student Grade 6
IB MYP Programme
International Division
"

"I have been an MTIS student from the very beginning, since Kindergarten, and the years spent here have been important to me. The teachers have always helped me learn new things and develop, both academically and personally as an individual. I made friends and learned to work better with those around me. This period will remain a decisive part of my life and will help me in the future to be more prepared for what comes next."

Sergiu, Student Grade 7
IB MYP Programme
Bilingual Division
"

"MTIS is for us much more than a simple school – it is a warm, dynamic and opportunity-filled environment in which our child, now in the 6th grade, bilingual division, is growing beautifully both academically and personally. Projects such as "Take action for environment" help students become responsible towards nature and the community, while moments such as "Secret Santa" bring a lot of joy, team spirit and friendship among the children. The trips organised to help them discover Bucharest and its history are a natural continuation of what happens in the classroom: learning goes beyond the textbook and becomes a direct experience. In addition, the Shakespeare Festival is a wonderful example of combining the study of the English language with theatre, culture and artistic expression."

Parent, Student Grade 6
IB MYP Programme
Bilingual Division
"

"Mark Twain International School has offered me numerous educational and personal development opportunities to learn about the different cultures of the world and about our differences, which also bring us together. I have been constantly supported by all my teachers in finding the answer and the solution to all the obstacles that appeared in my path along the way. At the same time, the outdoor space on campus is large and also includes a running track, where I run and walk with my classmates every day. And on the sports fields I can play volleyball or other sports and games with the other students. Therefore, MTIS has helped me develop academically, physically and mentally. It has also given me the opportunity to take part in many extracurricular activities organised for us by the teachers and principals, where I have also built closer relationships with those around me in the school community."

Sofia B., Student Grade 8
IB MYP Programme
Bilingual Division
"

"MTIS is a truly good school. I really enjoy studying at Mark Twain International School because the teachers are involved and support us, and the learning environment is positive. They encourage us to ask questions and help us succeed both academically and personally. I feel more confident about my future because of the education I am receiving here."

Beren, Student Grade 10
IB MYP Programme
International Division
"

"Mark Twain School offers a very pleasant and balanced educational environment. I especially appreciated the atmosphere in the school and the fact that the students are respectful and well educated, which creates a climate in which children feel safe and motivated to learn. Although the child is new to the school, the integration was quick and natural, both thanks to the group of students and to the openness of the teachers. I consider the environment to be warm and friendly, encouraging collaboration and personal development. Overall, the experience has been very good so far for a student in Year 6, bilingual division, and the educational environment offers both academic seriousness and openness to the harmonious development of children."

Parent, Student Grade 6
IB MYP Programme
Bilingual Division
"

"As a Year 12 student, I can truly say that Mark Twain International School has been an important part of my journey. Here, I found teachers who believed in me, friends who supported me and experiences that helped me grow. I will always be grateful for the memories, the lessons and the confidence this school has given me for the future."

Daria, Student Grade 12
IB Diploma Programme Year II
"

"As a student in my final year of high school at Mark Twain International School, I can say that this school has become more than just a place of learning for me. It has been my second home since the age of two, the place where I grew up, discovered who I am and learned to believe in myself. My teachers have always been by my side, supporting me both throughout my academic K–12 journey and in the many extracurricular activities. They know how to make lessons engaging and relevant, even when challenges arise, and they truly care about each of us as individuals. Being part of an IB World School community has shaped me deeply. IB values, openness to the world, curiosity, reflection and responsibility, are not just words, but principles I carry with me every day. I am deeply grateful for the guidance, the friendships and the sense of belonging this school has given me. It has prepared me not only for exams, but just as importantly, for life."

Sofia Bulie, Student Grade 12
National Baccalaureate Programme
"

"The MTIS family and our family are two concentric circles. We share the same centre: the children. Our radii have grown over time, each in its own proportion, steadily and undeniably. MTIS is the space that gives me the certainty of my children's safety. Learning, not only as an educational process, but as a fundamental psychological one through which we acquire new knowledge, skills and behaviours, takes place throughout life. But the sense of belonging is far more important; it is what lays the foundation for the emotional safety needed to truly learn. Here, this gift was offered to us. And the teachers, with vocation and dedication, are the ones from whom the children deeply understand. As Lewis Carrol’s Red Queen said, it takes a lot of running to stay in the same place, but it takes even more to get somewhere."

Parent of 3 students
Bilingual Division: High School, Middle School, Primary School
"

"In 2013, when I enrolled my child at MTIS, the 2 criteria that most influenced the decision were the fact that MTIS was the only school that, at that time, already had the experience of guiding a child / student through the entire school journey, meaning from preparatory class all the way to the end, in 12th grade and, at the same time, the extraordinary personal involvement and openness of the leadership and founders to listen and shape / adjust the best educational solution according to the particularities and needs of the parents and the student, something I had not seen in any other school. Today, 13 school years later, with 3 children having attended the school, I can say it was the best decision made, because when a critical moment appeared in our lives, the leadership / founders fully supported us and stood by us so that we could bring the educational and human situation to a good end."

Parent of 3 students
Bilingual Division: High School, Middle School, Primary School
Directorul General MTIS
Message from the General Director

A short message for parents from the General Director

The first years of a student’s academic journey build the values their future will rely on. We understand how important it is to shape values worth following and to create a coherent, strong, and enriching educational path that opens the way to any academic direction they may choose.

„I warmly greet you with great appreciation as we step together into the seasonal rhythm of friendship, love, and the renewal of spring, a time rich in traditions and celebrations, both in Romania and around the world.

Beyond the school’s busy activities and operations, this is also the time when we become even more active across all three beautiful MTIS campuses, as we enthusiastically plan and prepare the 2026–2027 academic year for our students”


Read the full message here.

Anca Macovei Vlăsceanu
Founder - Director general Mark Twain International School

Schedule a visit to the Mark Twain International Bilingual High School

Contact us through the form and we will get back to you as soon as possible to arrange a visit.

  • ✅ Response within 24 to 48 hours (working days)
  • ✅ Campus visit
  • ✅ Meeting with the directors and teachers
  • ✅ Presentation of the academic programs
  • ✅ Questions and formalities
Fill in the form