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

    The IGCSE / GCSE format felt unnecessarily confusing at first. I found a better balance between regular school and exam preparation.

    Arda Uzun

  • IGCSE / GCSE

    I was doing questions for IGCSE Biology on my own but never had a steady routine. I went into the exam much calmer than I would have before.

    Renata Loyola

  • IGCSE / GCSE

    Separating calculation errors from content gaps made revision more useful. A big thank you to my tutor for all the support :)

    Leonor Simoes

  • IGCSE / GCSE

    What annoyed me most was losing easy points because I rushed. After a while, the questions started to feel much more familiar.

    Siddharth Menon

  • IGCSE / GCSE

    After the first attempt, we looked for a calmer plan for the retake. Flexible scheduling helped during a demanding school year. The tutor's close attention to weaker areas gave us confidence. It was good to see confidence returning over time. The tutor supported regular study, not only the lesson content. We were pleased with the support we received.

    Wenjing Xu

  • IGCSE / GCSE

    The feedback I received on IGCSE Accounting was clear and practical. My tutor made it easy to ask questions from the first lesson. Separating strategy mistakes from content gaps made progress much quicker. Knowing what to study reduced a lot of the stress. After a while, the questions started to feel much more familiar. Thank you to my tutor and the TestPrep team.

    Hendrik Dietrich

  • IGCSE / GCSE

    I wasn't starting from zero, but the same mistakes kept showing up in my mocks. After each test, we looked beyond the score and reviewed the type of each mistake. Splitting time between research, making and editing kept the work manageable. My tutor usually asked me to explain my thinking before stepping in. Experiencing the exam format beforehand made test day much less stressful. The preparation felt calmer than I expected.

    Avery Donovan

  • IGCSE / GCSE

    The feedback I received on IGCSE Combined Science was clear and practical. Separating calculation errors from content gaps made revision more useful. I became much more comfortable asking questions in class.

    Cole Emerson

  • IGCSE / GCSE

    The IGCSE / GCSE format felt unnecessarily confusing at first. I finally understood what was going wrong in IGCSE Biology. We could make the workload lighter during busy weeks at school or university. Separating calculation errors from content gaps made revision more useful. My preparation became much more regular and easier to track. Thank you to my tutor and the TestPrep team.

    Gabriel Correia

  • IGCSE / GCSE

    Mistakes became something to work on rather than something to feel bad about. Online lessons made it possible to continue without losing time on travel. We thank the tutor and the TestPrep team.

    Celeste Delorme

  • IGCSE / GCSE

    Our daughter needed regular support with IGCSE Business Studies. Thank you sincerely to everyone involved.

    Brooklyn Shepard

  • IGCSE / GCSE

    Over time, IGCSE Business Studies became one of the most organized parts of my IGCSE / GCSE preparation. I started noticing the reason for a mistake much faster.

    Isla Rowntree

  • IGCSE / GCSE

    Keeping up with IGCSE / GCSE while school was busy was harder than I expected. It was an intense period, but it was worth it.

    Leonardo Ocampo

  • IGCSE / GCSE

    I was doing questions for IGCSE Psychology on my own but never had a steady routine. I found a better balance between regular school and exam preparation.

    Aoi Murakami

  • IGCSE / GCSE

    I was taking IGCSE Art and Design at school, but getting used to the exam questions took time. I was really happy with the lessons.

    Viola Amato

  • IGCSE / GCSE

    It was good to see confidence returning over time. A good connection with the tutor developed quite quickly. We would recommend the program to students and families in a similar situation.

    Mason Talbot

  • IGCSE / GCSE

    Keeping up with IGCSE / GCSE while school was busy was harder than I expected. Thank you to my tutor and the TestPrep team.

    Gustavo Gomes

  • IGCSE / GCSE

    Over time, IGCSE Economics became one of the most organized parts of my IGCSE / GCSE preparation. Balancing Quant and Verbal in the same week worked better than studying them in blocks. My mock results gradually became more consistent.

    Pim Inthara

  • IGCSE / GCSE

    When I started preparing for IGCSE / GCSE, I wasn't sure what order to study things in. Having the lesson move at my pace made the process feel much easier. Using the mark scheme to review my own answer was surprisingly helpful. I stopped doing a huge amount one week and nothing the next. My tutor could see my reasoning and usually found the source of an error quickly. The preparation felt calmer than I expected.

    Declan Langford

  • IGCSE / GCSE

    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. The group never had more than six students, so it was easy to stay involved. Past-paper questions showed me how different topics could appear together. My preparation became much more regular and easier to track. The preparation felt calmer than I expected.

    Yash Sen

  • IGCSE / GCSE

    I was taking IGCSE Computer Science at school, but getting used to the exam questions took time. Thank you to my tutor and the TestPrep team.

    Xinyi Gao

  • IGCSE / GCSE

    The feedback I received on IGCSE Additional Mathematics was clear and practical. One bad mock no longer made me want to drop the whole plan. Learning when to leave a hard question made a real difference to my timing. I left the exam feeling that I had done what I could. I wasn't trying to learn new topics at the very last minute. A big thank you to my tutor for all the support :)

    Mauricio Cisneros

  • IGCSE / GCSE

    I chose IGCSE Geography this year and wanted to build a solid base from the beginning. I started noticing the reason for a mistake much faster.

    Jisung Guk

  • IGCSE / GCSE

    Using the mark scheme to review my own answer was surprisingly helpful. It was an intense period, but it was worth it.

    Nayeon Moon

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500+ students supported|4.9/5 rating

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