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

  • AP Exams

    I was taking AP Calculus AB at school, but getting used to the exam questions took time. I could work on exam technique without falling behind in class. 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.

    Mengyao Xia

  • AP Exams

    The feedback helped me improve my own work without writing it for me. I was really happy with the lessons.

    Antoine Faure

  • AP Exams

    Over time, AP Research became one of the most organized parts of my AP Exams preparation. Near the exam, it was clear what to keep doing and what to stop. I realized that choosing a topic, researching and revising each needed its own deadline. 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. I'm genuinely thankful to my tutor for being patient.

    Nicolas Chacon

  • AP Exams

    We noticed that the resources kept changing during independent study. The tutor supported regular study, not only the lesson content. Topic-based question practice made study time more focused. It was good to see confidence returning over time. A good connection with the tutor developed quite quickly. Thank you sincerely to everyone involved.

    Logan Dean

  • AP Exams

    The AP Exams format felt unnecessarily confusing at first. There was no overnight miracle, but the progress was easy to see.

    Nanami Watanabe

  • AP Exams

    I started seeing shorter solutions that were easier to check under time pressure. Thanks to everyone who supported me.

    Melis Ozturk

  • AP Exams

    We wanted our child to keep up with the school pace in AP European History. We quickly felt that the tutor was a good match.

    Sameer Kohli

  • AP Exams

    I was close to my target, but my results changed a lot from one test to the next. Breaking AP Physics C: E&M into smaller pieces worked much better for me. One bad mock no longer made me want to drop the whole plan. I became much more careful with graphs, experiments and data-based questions. My mock results gradually became more consistent. It was an intense period, but it was worth it.

    Franco Urrutia

  • AP Exams

    As the exam got closer, I wasn't sure what I should actually review. The preparation felt calmer than I expected.

    Simone Costa

  • AP Exams

    Over time, AP Chemistry became one of the most organized parts of my AP Exams preparation. My confidence improved along with the results.

    Moritz Smit

  • AP Exams

    Keeping up with AP Exams while school was busy was harder than I expected. The feedback I received on AP European History was clear and practical. We could make the workload lighter during busy weeks at school or university. Using the mark scheme to review my own answer was surprisingly helpful. I became much more comfortable asking questions in class. Thanks to everyone who supported me.

    Jian Han

  • AP Exams

    Everyone recommended different resources and I kept switching between them. By the end of each lesson, I knew what I was supposed to do during the week. Before coding, I began thinking about which structure actually fit the problem. It was an intense period, but it was worth it.

    Alba Nieto

  • AP Exams

    Breaking AP Physics 1 into smaller pieces worked much better for me. I became much more comfortable asking questions in class.

    Soren Lewandowski

  • AP Exams

    Everyone recommended different resources and I kept switching between them. Having the lesson move at my pace made the process feel much easier. I started tracing code line by line instead of only reading it quickly. We could make the workload lighter during busy weeks at school or university. My tutor could see my reasoning and usually found the source of an error quickly. It was an intense period, but it was worth it.

    Oliver Lawson

  • AP Exams

    The AP Exams format felt unnecessarily confusing at first. I used the question bank regularly to return to weaker topics. I found a better balance between regular school and exam preparation. I'm glad I worked with my tutor through this process.

    Gavin Livingston

  • AP Exams

    What annoyed me most was losing easy points because I rushed. Breaking AP Microeconomics into smaller pieces worked much better for me. We could make the workload lighter during busy weeks at school or university. Separating strategy mistakes from content gaps made progress much quicker. I wasn't trying to learn new topics at the very last minute. Thank you to the tutor who stayed supportive until the end.

    Thais Santos

  • AP Exams

    What annoyed me most was losing easy points because I rushed. We could make the workload lighter during busy weeks at school or university. 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. My mock results gradually became more consistent. It was an intense period, but it was worth it.

    Santiago Cuellar

  • AP Exams

    I was taking AP Physics 1 at school, but getting used to the exam questions took time. My preparation became much more regular and easier to track.

    Brodie Norris

  • AP Exams

    Our son's school schedule was already very busy. We were able to follow the mock results regularly. Mistakes became something to work on rather than something to feel bad about. The tutor's close attention to weaker areas gave us confidence. The tutor supported regular study, not only the lesson content. We quickly felt that the tutor was a good match.

    Imogen Huxley

  • AP Exams

    I was taking AP Calculus AB at school, but getting used to the exam questions took time. A big thank you to my tutor for all the support :)

    Gabriela Reinoso

  • AP Exams

    Breaking AP European History into smaller pieces worked much better for me. When I got something wrong, we looked at why I chose that answer instead of only checking the solution. Connecting examples back to the main point made my writing more consistent. I went into the exam much calmer than I would have before. My confidence improved along with the results. Thank you to my tutor and the TestPrep team.

    Marcus Hawkins

  • AP Exams

    I finally understood what was going wrong in AP World History. My confidence improved along with the results.

    Enzo Aquino

  • AP Exams

    Anxiety became more visible as the exam got closer. We were able to follow the mock results regularly.

    Leonardo Cordero

  • AP Exams

    Our child had a clear goal but no steady study routine. Joining lessons willingly was one of the clearest signs for us. Online lessons made it possible to continue without losing time on travel. Full-length tests showed how time was being used across the exam. The overall experience was positive from beginning to end.

    Huong Hoang

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500+ students supported|4.9/5 rating

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