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

    Our child wasn't sure how to organize the preparation for IGCSE / GCSE. Returning to actual gaps instead of restarting everything saved time. It was good to see confidence returning over time. Flexible scheduling helped during a demanding school year. Seeing the change in our child made us very happy.

    Lara Jansen

  • IGCSE / GCSE

    After each test, we looked beyond the score and reviewed the type of each mistake. I finally understood what was going wrong in IGCSE Physics. After a while, the questions started to feel much more familiar. Thank you to my tutor and the TestPrep team.

    Andrea Neri

  • IGCSE / GCSE

    I was taking IGCSE Mathematics at school, but getting used to the exam questions took time. I started noticing the reason for a mistake much faster.

    Kiara Kirk

  • IGCSE / GCSE

    I was close to my target, but my results changed a lot from one test to the next. By the end of each lesson, I knew what I was supposed to do during the week. Past-paper questions showed me how different topics could appear together. I'm glad I worked with my tutor through this process.

    Kaan Celik

  • IGCSE / GCSE

    I was doing questions for IGCSE Statistics on my own but never had a steady routine. Full-length mocks helped me get used to the real exam pace. I found a better balance between regular school and exam preparation. I was really happy with the lessons.

    Devin Russell

  • IGCSE / GCSE

    We wanted our child to keep up with the school pace in IGCSE English as a Second Language. Including assignments and internal exams made the plan sustainable. We quickly felt that the tutor was a good match.

    Shelby Finley

  • IGCSE / GCSE

    I was doing questions for IGCSE English Literature on my own but never had a steady routine. The group never had more than six students, so it was easy to stay involved. Discussing why the other choices were wrong helped more than I expected. 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. It was an intense period, but it was worth it.

    Blake Nolan

  • IGCSE / GCSE

    I was doing questions for IGCSE Statistics on my own but never had a steady routine. My mock results gradually became more consistent.

    Aditi Bedi

  • IGCSE / GCSE

    I was close to my target, but my results changed a lot from one test to the next. School assignments and internal exam dates were included in the schedule. After a while, the questions started to feel much more familiar. It was an intense period, but it was worth it.

    Pooja Ghosh

  • IGCSE / GCSE

    I was taking IGCSE Computer Science at school, but getting used to the exam questions took time. My tutor usually asked me to explain my thinking before stepping in. My written code answers became much more organized. I was really happy with the lessons.

    Bea Santos

  • IGCSE / GCSE

    I finally understood what was going wrong in IGCSE Accounting. My case responses became more organized and direct. After a while, the questions started to feel much more familiar.

    Nana Tamura

  • IGCSE / GCSE

    Our child wasn't sure how to organize the preparation for IGCSE / GCSE. Including assignments and internal exams made the plan sustainable. It was good to see confidence returning over time. A good connection with the tutor developed quite quickly. We thank the tutor and the TestPrep team.

    Trevor Grady

  • IGCSE / GCSE

    When I started preparing for IGCSE / GCSE, I wasn't sure what order to study things in. My tutor could see my reasoning and usually found the source of an error quickly. Balancing Quant and Verbal in the same week worked better than studying them in blocks. I started tracking the type of mistake, not just the number of questions I completed. Having the lesson move at my pace made the process feel much easier. A big thank you to my tutor for all the support :)

    Jules Delorme

  • IGCSE / GCSE

    Breaking IGCSE History into smaller pieces worked much better for me. I stopped listing facts in essays and started building an actual argument. There was no overnight miracle, but the progress was easy to see.

    Josefina Paredes

  • IGCSE / GCSE

    I was doing questions for IGCSE Business Studies on my own but never had a steady routine. When I got something wrong, we looked at why I chose that answer instead of only checking the solution. My case responses became more organized and direct. A big thank you to my tutor for all the support :)

    Dimas Halim

  • IGCSE / GCSE

    Past-paper questions showed me how different topics could appear together. Thanks to TestPrep for helping me stay on track.

    Minho Do

  • IGCSE / GCSE

    After my first attempt, I wanted the second round of preparation to feel more organized. I started tracking the type of mistake, not just the number of questions I completed. Having the lesson move at my pace made the process feel much easier. I became much more careful with graphs, experiments and data-based questions. I started noticing the reason for a mistake much faster. I'm genuinely thankful to my tutor for being patient.

    Merve Yucel

  • IGCSE / GCSE

    A good connection with the tutor developed quite quickly. Mistakes became something to work on rather than something to feel bad about. The overall experience was positive from beginning to end.

    Ivan Kaminski

  • IGCSE / GCSE

    The IGCSE / GCSE format felt unnecessarily confusing at first. I'm glad I worked with my tutor through this process.

    Hyejin Song

  • IGCSE / GCSE

    The feedback was clear enough that I always knew what to revise next. I'm glad I worked with my tutor through this process.

    Spencer Barrett

  • IGCSE / GCSE

    When I started preparing for IGCSE / GCSE, I wasn't sure what order to study things in. I stopped doing a huge amount one week and nothing the next. Questions from other students often helped me as well. We focused more on understanding what the problem asked than memorizing formulas. After a while, the questions started to feel much more familiar. It was an intense period, but it was worth it.

    Rina Miura

  • IGCSE / GCSE

    Breaking IGCSE English Literature into smaller pieces worked much better for me. My preparation became much more regular and easier to track.

    Aoi Yoshida

  • IGCSE / GCSE

    We weren't sure whether online lessons would be effective. Regular mocks built familiarity with the real exam pace. We quickly felt that the tutor was a good match.

    Eliza Whitlam

  • IGCSE / GCSE

    After the first attempt, we looked for a calmer plan for the retake. Being able to fit lessons around school made the process easier. Seeing the change in our child made us very happy.

    Nils Bergman

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500+ students supported|4.9/5 rating

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