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 feedback I received on IGCSE English was clear and practical. My mock results gradually became more consistent.

    Madison Sullivan

  • IGCSE / GCSE

    What annoyed me most was losing easy points because I rushed. I was really happy with the lessons.

    Klara Devries

  • IGCSE / GCSE

    Our child had a clear goal but no steady study routine. A good connection with the tutor developed quite quickly. Being able to fit lessons around school made the process easier. Joining lessons willingly was one of the clearest signs for us. We were happy with both the teaching and the communication.

    Marnie Goodall

  • IGCSE / GCSE

    Over time, IGCSE Economics became one of the most organized parts of my IGCSE / GCSE preparation. My tutor usually asked me to explain my thinking before stepping in. With data-heavy questions, I began reading the task before getting lost in the table. I found a better balance between regular school and exam preparation. My mock results gradually became more consistent. Thanks to TestPrep for helping me stay on track.

    Davide Santoro

  • IGCSE / GCSE

    Breaking IGCSE Environmental Management into smaller pieces worked much better for me. By the end of each lesson, I knew what I was supposed to do during the week. Separating calculation errors from content gaps made revision more useful. I found a better balance between regular school and exam preparation. My mock results gradually became more consistent. The preparation felt calmer than I expected.

    Nicola Serra

  • IGCSE / GCSE

    Once I understood the reasons behind the facts, the questions felt less random. Thanks to TestPrep for helping me stay on track.

    Alvaro Sequeira

  • IGCSE / GCSE

    After my first attempt, I wanted the second round of preparation to feel more organized. By the end of each lesson, I knew what I was supposed to do during the week. I became much more careful with graphs, experiments and data-based questions. I was really happy with the lessons.

    Poppy Warren

  • IGCSE / GCSE

    I was taking IGCSE Accounting at school, but getting used to the exam questions took time. The plan changed with my mock and homework results, so the work never felt random. Choosing questions by topic made my practice time much more useful. With data-heavy questions, I began reading the task before getting lost in the table. I found a better balance between regular school and exam preparation. It was an intense period, but it was worth it.

    Javier Cunha

  • IGCSE / GCSE

    The feedback I received on IGCSE Biology was clear and practical. Once I understood the reasons behind the facts, the questions felt less random. After a while, the questions started to feel much more familiar.

    Johanna Lange

  • IGCSE / GCSE

    I was close to my target, but my results changed a lot from one test to the next. My tutor could see my reasoning and usually found the source of an error quickly. A quick check after each answer helped me catch small mistakes. By the end of each lesson, I knew what I was supposed to do during the week. Thanks to TestPrep for helping me stay on track.

    Finn Brandt

  • IGCSE / GCSE

    As the exam got closer, I wasn't sure what I should actually review. Choosing questions by topic made my practice time much more useful. Discussing why the other choices were wrong helped more than I expected. The plan changed with my mock and homework results, so the work never felt random. I used the question bank regularly to return to weaker topics. Thank you to the tutor who stayed supportive until the end.

    Janna Koch

  • IGCSE / GCSE

    It was good to see confidence returning over time. Preparation looked calmer and more organized closer to the exam. We thank the tutor and the TestPrep team.

    Bjorn Nikolic

  • IGCSE / GCSE

    Breaking IGCSE Mathematics into smaller pieces worked much better for me. Going back to the lesson recordings helped when I forgot a small step. A quick check after each answer helped me catch small mistakes. Knowing what to study reduced a lot of the stress. I left the exam feeling that I had done what I could. I'm genuinely thankful to my tutor for being patient.

    Ludovica Bellini

  • IGCSE / GCSE

    After my first attempt, I wanted the second round of preparation to feel more organized. Thanks to everyone who supported me.

    Sirin Meechai

  • IGCSE / GCSE

    What annoyed me most was losing easy points because I rushed. Thanks to everyone who supported me.

    Erin Walsh

  • IGCSE / GCSE

    We were able to follow the mock results regularly. We would recommend the program to students and families in a similar situation.

    Donghyun Pyo

  • IGCSE / GCSE

    I was doing questions for IGCSE English on my own but never had a steady routine. My tutor usually asked me to explain my thinking before stepping in. Lesson times could fit around school, university or work. A lot of my mistakes came from rushing through the wording of the question. I wasn't trying to learn new topics at the very last minute. Thanks to TestPrep for helping me stay on track.

    Trent Gilmour

  • IGCSE / GCSE

    We weren't sure whether online lessons would be effective. We were pleased with the support we received.

    Mateo Cuevas

  • IGCSE / GCSE

    Our daughter needed regular support with IGCSE Economics. Being able to fit lessons around school made the process easier. It was good to see confidence returning over time. A good connection with the tutor developed quite quickly. We were pleased with the support we received.

    Selin Turan

  • IGCSE / GCSE

    After the first attempt, we looked for a calmer plan for the retake. Thank you sincerely to everyone involved.

    Mafalda Guerreiro

  • IGCSE / GCSE

    Our daughter needed regular support with IGCSE Accounting. The overall experience was positive from beginning to end.

    Mitchell Moroney

  • IGCSE / GCSE

    Our child wasn't sure how to organize the preparation for IGCSE / GCSE. Seeing the change in our child made us very happy.

    Tobias Busch

  • IGCSE / GCSE

    At the beginning, we knew very little about the IGCSE / GCSE system as parents. With no more than six students, the tutor had time for everyone. The overall experience was positive from beginning to end.

    Maddison Draper

  • IGCSE / GCSE

    Discussing why the other choices were wrong helped more than I expected. A big thank you to my tutor for all the support :)

    Beatrice Ferrara

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500+ students supported|4.9/5 rating

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