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

  • IGCSE / GCSE

    After my first attempt, I wanted the second round of preparation to feel more organized. Over time, IGCSE Chemistry became one of the most organized parts of my IGCSE / GCSE preparation. Near the exam, it was clear what to keep doing and what to stop. I became much more careful with graphs, experiments and data-based questions. There was no overnight miracle, but the progress was easy to see. Thanks to TestPrep for helping me stay on track.

    Teresa Rojas

  • IGCSE / GCSE

    A good connection with the tutor developed quite quickly. We would recommend the program to students and families in a similar situation.

    Woojin Ahn

  • IGCSE / GCSE

    Online lessons made it possible to continue without losing time on travel. Joining lessons willingly was one of the clearest signs for us. The overall experience was positive from beginning to end.

    Huong Dang

  • IGCSE / GCSE

    Over time, IGCSE Psychology became one of the most organized parts of my IGCSE / GCSE preparation. I wasn't trying to learn new topics at the very last minute.

    Marco Rinaldi

  • IGCSE / GCSE

    After my first attempt, I wanted the second round of preparation to feel more organized. My tutor usually asked me to explain my thinking before stepping in. We didn't spend extra time on things I already knew. Balancing Quant and Verbal in the same week worked better than studying them in blocks. I left the exam feeling that I had done what I could. It was an intense period, but it was worth it.

    Arif Siregar

  • IGCSE / GCSE

    The feedback I received on IGCSE Additional Mathematics was clear and practical. I started tracking the type of mistake, not just the number of questions I completed. Seeing several versions of the same topic made unfamiliar questions less stressful. I wasn't trying to learn new topics at the very last minute. After a while, the questions started to feel much more familiar. Thank you to my tutor and the TestPrep team.

    Jakub Moen

  • IGCSE / GCSE

    Over time, IGCSE Mathematics became one of the most organized parts of my IGCSE / GCSE preparation. The plan changed with my mock and homework results, so the work never felt random. Seeing several versions of the same topic made unfamiliar questions less stressful. There was no overnight miracle, but the progress was easy to see. I became much more comfortable asking questions in class. The preparation felt calmer than I expected.

    Tolga Bilgin

  • IGCSE / GCSE

    The feedback I received on IGCSE Geography was clear and practical. I never felt awkward asking the same thing again. Source questions became easier once I noticed how small details affected the mark. I started noticing the reason for a mistake much faster. My confidence improved along with the results. Thank you to the tutor who stayed supportive until the end.

    Jade Banfield

  • IGCSE / GCSE

    Breaking IGCSE Sociology into smaller pieces worked much better for me. I wasn't trying to learn new topics at the very last minute.

    Sergio Guerreiro

  • IGCSE / GCSE

    Over time, IGCSE English Literature became one of the most organized parts of my IGCSE / GCSE preparation. My mock results gradually became more consistent.

    Ignacio Navarrete

  • IGCSE / GCSE

    The feedback I received on IGCSE English as a Second Language was clear and practical. 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. I found a better balance between regular school and exam preparation. Knowing what to study reduced a lot of the stress. I'm genuinely thankful to my tutor for being patient.

    Leandro Mendoza

  • IGCSE / GCSE

    When I started preparing for IGCSE / GCSE, I wasn't sure what order to study things in. We didn't spend extra time on things I already knew. We focused more on understanding what the problem asked than memorizing formulas. The plan changed with my mock and homework results, so the work never felt random. I'm glad I worked with my tutor through this process.

    Elena Fuentes

  • IGCSE / GCSE

    After enough examples of the same question type, the repeated mistakes decreased. Breaking IGCSE Geography into smaller pieces worked much better for me. My confidence improved along with the results. Thank you to the tutor who stayed supportive until the end.

    Gabriele Rossetti

  • IGCSE / GCSE

    Over time, IGCSE Turkish became one of the most organized parts of my IGCSE / GCSE preparation. I left the exam feeling that I had done what I could.

    Camille Brunet

  • IGCSE / GCSE

    When I started preparing for IGCSE / GCSE, I wasn't sure what order to study things in. The group never had more than six students, so it was easy to stay involved. I learned to make a short plan before starting a long response. We could make the workload lighter during busy weeks at school or university. Even in a group lesson, the tutor knew where each of us stood. I was really happy with the lessons.

    Cooper Gibson

  • IGCSE / GCSE

    When I started preparing for IGCSE / GCSE, I wasn't sure what order to study things in. During the intensive review, we returned to real gaps instead of restarting everything. I learned not to spend the same amount of time on every line of a long text. My tutor usually asked me to explain my thinking before stepping in. Focusing on past papers and mock review worked well near the exam. A big thank you to my tutor for all the support :)

    Soren Solberg

  • IGCSE / GCSE

    As the exam got closer, I wasn't sure what I should actually review. The plan changed with my mock and homework results, so the work never felt random. Connecting examples back to the main point made my writing more consistent. Thank you to my tutor and the TestPrep team.

    Ruby Elliott

  • IGCSE / GCSE

    As the exam got closer, I wasn't sure what I should actually review. When I got something wrong, we looked at why I chose that answer instead of only checking the solution. Past-paper questions showed me how different topics could appear together. I'm genuinely thankful to my tutor for being patient.

    Daniel Atkins

  • IGCSE / GCSE

    I stopped choosing answers by feel and started looking for evidence in the passage. The preparation felt calmer than I expected.

    Riley Ritchie

  • IGCSE / GCSE

    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. A clear plan for the final weeks made priorities much easier to see. I understood that the portfolio needed to show the process, not only the finished piece. I became much more comfortable asking questions in class. A big thank you to my tutor for all the support :)

    Kayla Donovan

  • IGCSE / GCSE

    Breaking IGCSE Environmental Management into smaller pieces worked much better for me. Once I understood the reasons behind the facts, the questions felt less random. I left the exam feeling that I had done what I could.

    Diego Rojas

  • IGCSE / GCSE

    As the exam got closer, I wasn't sure what I should actually review. When I got something wrong, we looked at why I chose that answer instead of only checking the solution. Separating strategy mistakes from content gaps made progress much quicker. I was really happy with the lessons.

    Meilin Huang

  • IGCSE / GCSE

    Our son's school schedule was already very busy. We were able to follow the mock results regularly.

    Piper Sinclair

  • IGCSE / GCSE

    Our daughter needed regular support with IGCSE English Literature. Full-length tests showed how time was being used across the exam. We were happy with both the teaching and the communication.

    Leandro Machado

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500+ students supported|4.9/5 rating

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