TestPrep
Student Results

Real Score Improvements. Our Students’ Results.

See individual students' starting and later SAT, AP, ACT and GMAT scores (anonymized), with their study periods and program formats. Outcomes vary by student.

500+
Students Supported
Score Improvements

Before and After Results

Real score improvements from students in our SAT, AP, ACT and GMAT programs.

SAT
Türkiye
Before
1180
After
1420
+240
Elif A.4 months
SAT
Türkiye
Before
1250
After
1410
+160
Emre K.2 months
ACT
Türkiye
Before
24
After
34
+10
Selin L.3 months
AP Calculus
Türkiye
Before
3
After
5
+2
Murat T.6 months
GMAT — old GMAT (200-800 scale)
Türkiye
Before
580
After
720
+140
Can Y.4 months
SAT
Türkiye
Before
1180
After
1420
+240
Ayse C.3 months
ACT
Türkiye
Before
27
After
33
+6
Berkay C.2 months
AP Physics
Türkiye
Before
2
After
5
+3
Defne P.8 months
Featured Successes

Detailed Case Studies

In-depth stories from our students who achieved outstanding results.

SAT
Before
1180
After
1420
+240
points
4 monthsPrivate Tutoring

I was devastated after my first SAT attempt. The diagnostic test identified my weak points in Reading and Math, and my tutor created a focused plan. In 4 months I went up 240 points and got accepted to UCLA!

Elif Arslan
Istanbul, Türkiye
Accepted to UCLA
GMAT
Before
580
After
720
+140
points
5 monthsPrivate Tutoring

After trying other programs, TestPrep Istanbul finally worked. The personalized approach to Data Sufficiency and Critical Reasoning made all the difference. Now I'm doing my MBA at Wharton.

Can Yilmaz
Ankara, Türkiye
Accepted to Wharton MBA
ACT
Before
24
After
34
+10
points
3 monthsSmall Group

The Science section was my biggest weakness. My tutor taught me efficient data interpretation strategies. The small group format kept my motivation high and I went from 24 to 34!

Selin Kaya
Izmir, Türkiye
Full Scholarship to Rice University
What Our Students Say

Reviews From Around the World

Reviews from SAT, AP, ACT and GMAT students and their parents.

SAT
Türkiye

"TestPrep Istanbul helped me increase my SAT score by 240 points! The tutors are incredibly knowledgeable and the personalized approach made all the difference."

Ayse Celik
Student
3 months | Private Tutoring | 1180 -> 1420
SAT
Türkiye

"As a parent, I appreciate the regular progress reports and flexibility. My son went from struggling to confident in just 4 months."

Mehmet Yildirim
Parent
4 months | Small Group
ACT
Türkiye

"The practice tests were incredibly realistic. On exam day I felt completely prepared and scored 34!"

Selin Kaya
Student
3 months | Private Tutoring | 24 -> 34
GMAT
Türkiye

"After trying other programs, TestPrep Istanbul finally worked. Their GMAT strategies are next level. I got into Wharton!"

Can Yilmaz
MBA Candidate
5 months | Private Tutoring | 580 → 720 (old GMAT, 200-800 scale)
AP
Türkiye

"I took 4 AP courses with TestPrep Istanbul and scored 5 on all of them. The tutors know exactly what the College Board is looking for."

Defne Polat
Student
8 months | Physics, Calc, Chem, Bio
SAT
Türkiye

"Worth every penny. Our investment in our daughter's education paid off with a full scholarship. Thank you TestPrep Istanbul!"

Ali Demir
Parent
6 months | Private Tutoring
IB
Türkiye

"I was struggling with IB Math HL. My tutor explained concepts step by step and I scored 7 on my IA!"

Beren Ozkan
Student
4 months | Private Tutoring | Math AA HL
IELTS
Türkiye

"I went from 5.5 to 7.5 in Writing. The Speaking strategies really worked."

Kerem Aydin
Student
3 months | Private Tutoring | Overall 8.0

Student reviews

2,000 approved reviewsApproved student reviews across all our courses

  • IB Diploma

    Anxiety became more visible as the exam got closer. Individual lesson time was used around our child's actual needs. We would recommend the program to students and families in a similar situation.

    Mauricio Alarcon

  • IB Diploma

    Anxiety became more visible as the exam got closer. Individual lesson time was used around our child's actual needs. Seeing the change in our child made us very happy.

    Juliana Ibarra

  • IB Diploma

    Our child had a clear goal but no steady study routine. We were able to follow the mock results regularly. Online lessons made it possible to continue without losing time on travel. The tutor's calm approach helped protect motivation during the intensive period. Mistakes became something to work on rather than something to feel bad about. Thank you sincerely to everyone involved.

    Minji Cha

  • IB Diploma

    We weren't sure whether online lessons would be effective. The tutor's close attention to weaker areas gave us confidence. Joining lessons willingly was one of the clearest signs for us. Preparation looked calmer and more organized closer to the exam. We would recommend the program to students and families in a similar situation.

    Dylan Bennett

  • IB Diploma

    I was taking IB Chemistry at school, but getting used to the exam questions took time. I stopped doing a huge amount one week and nothing the next. Past-paper questions showed me how different topics could appear together. It was an intense period, but it was worth it.

    Clemence Pascal

  • IB Diploma

    School assignments and internal exam dates were included in the schedule. I finally understood what was going wrong in IB Mathematics AI. There was no overnight miracle, but the progress was easy to see. Thanks to TestPrep for helping me stay on track.

    Francesca Gallo

  • IB Diploma

    Breaking Internal Assessment (IA) into smaller pieces worked much better for me. I never felt awkward asking the same thing again. I realized that choosing a topic, researching and revising each needed its own deadline. I wasn't trying to learn new topics at the very last minute. I found a better balance between regular school and exam preparation. Thanks to TestPrep for helping me stay on track.

    Ethan Coleman

  • IB Diploma

    We wanted our child to keep up with the school pace in Theory of Knowledge (TOK). Joining lessons willingly was one of the clearest signs for us.

    Daniela Escobar

  • IB Diploma

    Over time, IB Biology became one of the most organized parts of my IB Diploma preparation. I stopped doing a huge amount one week and nothing the next. Once I understood the reasons behind the facts, the questions felt less random. Knowing what to study reduced a lot of the stress. I wasn't trying to learn new topics at the very last minute. I'm genuinely thankful to my tutor for being patient.

    Julian Arellano

  • IB Diploma

    After enough examples of the same question type, the repeated mistakes decreased. The feedback I received on Extended Essay (EE) was clear and practical. I went into the exam much calmer than I would have before. I'm glad I worked with my tutor through this process.

    Brooklyn Keegan

  • IB Diploma

    As the exam got closer, I wasn't sure what I should actually review. A clear plan for the final weeks made priorities much easier to see. I started noticing the reason for a mistake much faster. I'm glad I worked with my tutor through this process.

    Brianna Chandler

  • IB Diploma

    The feedback I received on IB Biology was clear and practical. Near the exam, it was clear what to keep doing and what to stop. Once I understood the reasons behind the facts, the questions felt less random. I became much more comfortable asking questions in class. I wasn't trying to learn new topics at the very last minute. I was really happy with the lessons.

    Yuna Sung

  • IB Diploma

    I chose Internal Assessment (IA) this year and wanted to build a solid base from the beginning. Thanks to everyone who supported me.

    Merve Aydin

  • IB Diploma

    When I started preparing for IB Diploma, I wasn't sure what order to study things in. Even in a group lesson, the tutor knew where each of us stood. I wasn't trying to learn new topics at the very last minute. I'm glad I worked with my tutor through this process.

    Isla Ritchie

  • IB Diploma

    After my first attempt, I wanted the second round of preparation to feel more organized. Having the lesson move at my pace made the process feel much easier. We focused more on understanding what the problem asked than memorizing formulas. My tutor usually asked me to explain my thinking before stepping in. Lesson times could fit around school, university or work. It was an intense period, but it was worth it.

    Leonardo Beltran

  • IB Diploma

    As the exam got closer, I wasn't sure what I should actually review. I finally understood what was going wrong in IB Psychology. One bad mock no longer made me want to drop the whole plan. Using the mark scheme to review my own answer was surprisingly helpful. I became much more comfortable asking questions in class. A big thank you to my tutor for all the support :)

    Blake Bennett

  • IB Diploma

    As the exam got closer, I wasn't sure what I should actually review. Near the exam, it was clear what to keep doing and what to stop. I learned to make a short plan before starting a long response. I was really happy with the lessons.

    Jack Palmer

  • IB Diploma

    What annoyed me most was losing easy points because I rushed. When I got something wrong, we looked at why I chose that answer instead of only checking the solution. During the intensive review, we returned to real gaps instead of restarting everything. Separating strategy mistakes from content gaps made progress much quicker. My preparation became much more regular and easier to track. It was an intense period, but it was worth it.

    Thais Leite

  • IB Diploma

    When I started preparing for IB Diploma, I wasn't sure what order to study things in. Full-length mocks helped me get used to the real exam pace. My mock results gradually became more consistent. Thanks to everyone who supported me.

    Umut Polat

  • IB Diploma

    I finally understood what was going wrong in IB English A. I started tracking the type of mistake, not just the number of questions I completed. My written answers became shorter, clearer and easier to follow. My preparation became much more regular and easier to track. I found a better balance between regular school and exam preparation. Thanks to TestPrep for helping me stay on track.

    Oliver Nolan

  • IB Diploma

    The IB Diploma format felt unnecessarily confusing at first. The group never had more than six students, so it was easy to stay involved. I left the exam feeling that I had done what I could. Thank you to the tutor who stayed supportive until the end.

    Daniela Espinoza

  • IB Diploma

    I wasn't starting from zero, but the same mistakes kept showing up in my mocks. I stopped doing a huge amount one week and nothing the next. Even in a group lesson, the tutor knew where each of us stood. Knowing the criteria from the start made the whole task less vague. I started noticing the reason for a mistake much faster. Thank you to the tutor who stayed supportive until the end.

    Hyunseok Ko

  • IB Diploma

    The feedback I received on IB Geography was clear and practical. Using the mark scheme to review my own answer was surprisingly helpful. My preparation became much more regular and easier to track.

    Joana Antunes

  • IB Diploma

    Our child wasn't sure how to organize the preparation for IB Diploma. We were pleased with the support we received.

    Aditi Malhotra

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500+ students supported|4.9/5 rating

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