Petar Dubovac
NYU Stern
TOEFL 113 / 120
TOEFL prep 1-on-1
Ready for the new adaptive 2026 format: pass on your first attempt and enroll at the university of your dreams
TOEFL changed completely in January 2026. We prepare exclusively on the new materials. 1-on-1 mentorship with experts who have spent 12 years helping students pass the TOEFL and study abroad.
After finishing the program you'll walk away with all the skills, techniques, knowledge, and strategies that have helped students just like you score over 100 points on average on the TOEFL and enroll at some of the most prestigious universities in the world.
ABOUT US
A system built on experience
Stefan Mrvaljević, MSc is the founder and director of Achivr Educational Technologies. He is the recipient of two prestigious academic scholarships: the Chevening Scholarship at University College London (UCL), ranked among the top 5 universities in the world, and the Swedish Institute Scholarship at Lund University (top 12 in Europe).
After more than a decade working with young people, his students have enrolled, often with full scholarships, at universities such as Politecnico di Milano, Bocconi, TU München, LMU, Leiden, TU Delft, KTH, Lund, ETH Zurich, CEU Budapest, as well as Harvard, MIT, Cornell, NYU, and the University of Toronto.
What you get in our TOEFL prep program:
01
100% Personalized 1-on-1 Prep
As part of our program you get access to a thorough prep plan covering every part of the TOEFL test. You'll work exclusively 1-on-1 with a professor dedicated to you week after week. You'll have access to your professor at flexible times, both during and outside lessons, plus our whole team standing by to help you get the most out of the program.
.avif)
02
Work with Real TOEFL Experts
You'll work with a team of professors who are specialists with years of experience in TOEFL prep. You'll also get the chance to receive advice and consultations with our founder Stefan Mrvaljević, MSc, recipient of prestigious academic scholarships, TOEFL expert, and author of academic textbooks and courses.
03
The Path to a Scholarship
Alongside TOEFL prep, you get free access to our strategic consultation programs, which have given our students the skills they needed to apply for and win scholarships at universities such as Harvard, KTH, Cornell, NYU, and many others.
Additional perks included in the program
Daily reports and tasks
After every session you get a short report on what was covered and what's next, plus concrete homework. You know exactly what to do between sessions, no guesswork.
Flexible scheduling
More than 30 slots per week, including weekends and late afternoons. Book, move, or cancel with one click.
Full test simulation
Full TOEFL simulations under real conditions: adaptive routing, time limits, and the same format as the real test. You sit the exam once you clear your target score.
24/7 support
Questions about homework, doubts about a Writing prompt, pre-test nerves. Your mentor replies the same day, weekends and holidays included. You never wait for the next session.
AI progress tracking
AI analyzes fluency, grammar, vocabulary, and structure across all 4 TOEFL sections and gives a predictive score that updates in real time.
Daily reports and tasks
After every session you get a short report on what was covered and what's next, plus concrete homework. You know exactly what to do between sessions, no guesswork.
Flexible scheduling
More than 30 slots per week, including weekends and late afternoons. Book, move, or cancel with one click.
Full test simulation
Full TOEFL simulations under real conditions: adaptive routing, time limits, and the same format as the real test. You sit the exam once you clear your target score.
24/7 support
Questions about homework, doubts about a Writing prompt, pre-test nerves. Your mentor replies the same day, weekends and holidays included. You never wait for the next session.
AI progress tracking
AI analyzes fluency, grammar, vocabulary, and structure across all 4 TOEFL sections and gives a predictive score that updates in real time.
Hear from our incredible students who achieved amazing results
Sofija Janković
London School of Economics
TOEFL 112 / 120
Nenad Bosnić
Peking University
TOEFL 103 / 120
Jelisaveta Aleksić
ETH Lausanne
TOEFL 112 / 120
Anja Đurđević
Copenhagen University
TOEFL 93 / 120
Ajla Midžić
University of Graz
MSc Digital Engineering (Robotics)
TOEFL 98 / 120
Lidija Zečević
University of Belgrade
PhD student
TOEFL 113 / 120
“
Getting in touch with Stefan was the best thing that ever happened to me. He's dedicated and passionate about what he does, he zeroes in on the parts you're weaker at while also sharpening the parts you're already good at. The prep is challenging but it's absolutely worth it. I'd rate him 10/10!
Marko DjuranovićScholarship
Cornell University · TOEFL 102 / 120
“
The professor is very engaged while working with students and makes the lessons enjoyable. He knows every tip and trick for scoring high on the TOEFL. You'll be in safe hands, 10/10 recommend!
Đorđe Leverda
London School of Economics · TOEFL 108 / 120
“
Stefan is fantastic and fully committed to preparing you as well as possible for the test, my most honest recommendation to everyone! The result speaks louder than words, 111 out of 120 after very intensive, dedicated work.
Jovana Ostojić
University of Milan · TOEFL 111 / 120
“
Stefan is an excellent professor: knowledgeable, approachable, and knows the TOEFL inside out. Before working with Stefan I had 79 points, after the program 103. With Stefan it's all about efficiency, he precisely gauges your abilities and sets the right goal.
Milan MilenkovićScholarship
University of North Carolina · TOEFL 103 / 120
“
I had about a month to prepare and needed a minimum of 100 points. Stefan helped me get through every obstacle with useful advice, not just practical but psychological too, which was key during the actual exam.
Anđela MidićScholarship
Leiden University · TOEFL 104 / 120
“
Knowing I needed to "chase" a specific score created nervousness and stress. With Stefan's help, my approach to prep quickly became relaxed thanks to his extensive experience. After 2 months of prep I sat the test and scored well above what I needed.
Đorđe AntićScholarship
Technical University of Munich · TOEFL 100 / 120
Mentorship program with Stefan Mrvaljević, MSc
See the details of the ACADEMIC SUCCESS 3.0 program, starting this August.
See program details