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 finally understood what was going wrong in AP Biology. I never felt awkward asking the same thing again. Separating calculation errors from content gaps made revision more useful. I went into the exam much calmer than I would have before. I wasn't trying to learn new topics at the very last minute. A big thank you to my tutor for all the support :)

    Thiago Marques

  • AP Exams

    We wanted our child to keep up with the school pace in AP US Government. We would recommend the program to students and families in a similar situation.

    Takumi Nakajima

  • AP Exams

    I was close to my target, but my results changed a lot from one test to the next. I finally understood what was going wrong in AP Physics 2. We could make the workload lighter during busy weeks at school or university. Once I understood the reasons behind the facts, the questions felt less random. My confidence improved along with the results. The preparation felt calmer than I expected.

    Blake Haines

  • AP Exams

    I was doing questions for AP Computer Science Principles on my own but never had a steady routine. We didn't spend extra time on things I already knew. Predicting the output helped me catch small logic errors. My tutor usually asked me to explain my thinking before stepping in. Lesson times could fit around school, university or work. It was an intense period, but it was worth it.

    Connor Hartley

  • AP Exams

    Our daughter needed regular support with AP Biology. Online lessons made it possible to continue without losing time on travel. A good connection with the tutor developed quite quickly. The tutor's close attention to weaker areas gave us confidence. Mistakes became something to work on rather than something to feel bad about. We thank the tutor and the TestPrep team.

    Nazli Gokce

  • AP Exams

    The feedback I received on AP Psychology was clear and practical. There was no overnight miracle, but the progress was easy to see.

    Harrison Teague

  • AP Exams

    I wasn't starting from zero, but the same mistakes kept showing up in my mocks. I started tracking the type of mistake, not just the number of questions I completed. Source questions became easier once I noticed how small details affected the mark. I'm glad I worked with my tutor through this process.

    Maelle Delorme

  • AP Exams

    Breaking AP Seminar into smaller pieces worked much better for me. I left the exam feeling that I had done what I could.

    Seojun Ryu

  • AP Exams

    After the first attempt, we looked for a calmer plan for the retake. It was good to see confidence returning over time. A good connection with the tutor developed quite quickly. Regular work on similar question types reduced repeated mistakes. Preparation looked calmer and more organized closer to the exam. We were pleased with the support we received.

    Bailey Ritchie

  • AP Exams

    The AP Exams format felt unnecessarily confusing at first. Even in a group lesson, the tutor knew where each of us stood. 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. The group never had more than six students, so it was easy to stay involved. I'm genuinely thankful to my tutor for being patient.

    Fernanda Palacios

  • AP Exams

    As the exam got closer, I wasn't sure what I should actually review. My tutor could see my reasoning and usually found the source of an error quickly. After a while, the questions started to feel much more familiar. It was an intense period, but it was worth it.

    Sude Ersoy

  • AP Exams

    Our son's school schedule was already very busy. Full-length tests showed how time was being used across the exam. Online lessons made it possible to continue without losing time on travel. Preparation looked calmer and more organized closer to the exam. Seeing the change in our child made us very happy.

    Brooke Livingston

  • AP Exams

    Keeping up with AP Exams while school was busy was harder than I expected. Near the exam, it was clear what to keep doing and what to stop. I learned to make a short plan before starting a long response. The preparation felt calmer than I expected.

    Lauren Pritchard

  • AP Exams

    Everyone recommended different resources and I kept switching between them. Thanks to TestPrep for helping me stay on track.

    Mei Watanabe

  • AP Exams

    The AP Exams format felt unnecessarily confusing at first. My tutor made it easy to ask questions from the first lesson. My tutor could see my reasoning and usually found the source of an error quickly. My written answers became shorter, clearer and easier to follow. Knowing what to study reduced a lot of the stress. Thank you to the tutor who stayed supportive until the end.

    Somchai Wongchai

  • AP Exams

    I was taking AP Macroeconomics at school, but getting used to the exam questions took time. Questions from other students often helped me as well. I became much more comfortable asking questions in class. I'm glad I worked with my tutor through this process.

    Jelena Kral

  • AP Exams

    Everyone recommended different resources and I kept switching between them. Questions from other students often helped me as well. I became much more comfortable asking questions in class. Thanks to everyone who supported me.

    Elin Bergman

  • AP Exams

    My written answers became shorter, clearer and easier to follow. I was really happy with the lessons.

    Sneha Bhatt

  • AP Exams

    Keeping up with AP Exams while school was busy was harder than I expected. Experiencing the exam format beforehand made test day much less stressful. Source questions became easier once I noticed how small details affected the mark. When I got something wrong, we looked at why I chose that answer instead of only checking the solution. The mocks showed where my time was actually being lost. Thanks to TestPrep for helping me stay on track.

    Peng Dai

  • AP Exams

    Everyone recommended different resources and I kept switching between them. The group never had more than six students, so it was easy to stay involved. Knowing what to study reduced a lot of the stress. Thank you to the tutor who stayed supportive until the end.

    Haeun Kim

  • AP Exams

    My case responses became more organized and direct. It was an intense period, but it was worth it.

    Leif Kristensen

  • AP Exams

    I stopped listing facts in essays and started building an actual argument. The preparation felt calmer than I expected.

    Celeste Chartier

  • AP Exams

    We wanted our child to keep up with the school pace in AP Microeconomics. Being able to fit lessons around school made the process easier. The lessons started being followed without constant reminders from us. Flexible scheduling helped during a demanding school year. Thank you sincerely to everyone involved.

    Burak Ersoy

  • AP Exams

    Our child had a clear goal but no steady study routine. Mistakes became something to work on rather than something to feel bad about.

    Nikhil Purohit

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