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 World History. Connecting examples back to the main point made my writing more consistent. I started noticing the reason for a mistake much faster.

    Miku Matsumoto

  • AP Exams

    Our child had a clear goal but no steady study routine. A good connection with the tutor developed quite quickly. Online lessons made it possible to continue without losing time on travel. Topic-based question practice made study time more focused. Communication with the team was straightforward and our questions were answered. We were pleased with the support we received.

    Yui Takeuchi

  • AP Exams

    We noticed that the resources kept changing during independent study. Full-length tests showed how time was being used across the exam. We were pleased with the support we received.

    Daiki Ikeda

  • AP Exams

    I finally understood what was going wrong in AP Research. Keeping the sources organized saved a lot of time later. I left the exam feeling that I had done what I could.

    Riku Yamada

  • AP Exams

    We weren't sure whether online lessons would be effective. The tutor's close attention to weaker areas gave us confidence. Preparation looked calmer and more organized closer to the exam. We were happy with both the teaching and the communication.

    Tommaso Testa

  • AP Exams

    I was close to my target, but my results changed a lot from one test to the next. I'm genuinely thankful to my tutor for being patient.

    Georgia Fletcher

  • AP Exams

    Our child wasn't sure how to organize the preparation for AP Exams. Preparation looked calmer and more organized closer to the exam. We were pleased with the support we received.

    Jules Chartier

  • AP Exams

    As the exam got closer, I wasn't sure what I should actually review. Over time, AP Human Geography became one of the most organized parts of my AP Exams preparation. The plan changed with my mock and homework results, so the work never felt random. I stopped listing facts in essays and started building an actual argument. I wasn't trying to learn new topics at the very last minute. Thank you to the tutor who stayed supportive until the end.

    Yaren Tas

  • AP Exams

    The feedback I received on AP English Language was clear and practical. I left the exam feeling that I had done what I could.

    Anna Jansen

  • AP Exams

    Over time, AP Physics C: E&M became one of the most organized parts of my AP Exams preparation. I stopped doing a huge amount one week and nothing the next. Past-paper questions showed me how different topics could appear together. My confidence improved along with the results. I'm genuinely thankful to my tutor for being patient.

    Alana Finlay

  • AP Exams

    I chose AP Computer Science Principles this year and wanted to build a solid base from the beginning. I wasn't trying to learn new topics at the very last minute.

    Martina Vitale

  • AP Exams

    I was doing questions for AP Human Geography on my own but never had a steady routine. I became much more comfortable asking questions in class.

    Aline Nunes

  • AP Exams

    After my first attempt, I wanted the second round of preparation to feel more organized. I finally understood what was going wrong in AP Comparative Government. The plan changed with my mock and homework results, so the work never felt random. Using the mark scheme to review my own answer was surprisingly helpful. There was no overnight miracle, but the progress was easy to see. I'm glad I worked with my tutor through this process.

    Nicola Caruso

  • AP Exams

    Anxiety became more visible as the exam got closer. The tutor supported regular study, not only the lesson content.

    Shelby Dalton

  • AP Exams

    I chose AP Art History this year and wanted to build a solid base from the beginning. I'm glad I worked with my tutor through this process.

    Andre Moura

  • AP Exams

    What annoyed me most was losing easy points because I rushed. One bad mock no longer made me want to drop the whole plan. Choosing questions by topic made my practice time much more useful. Breaking the draft into smaller parts made it feel much more doable. My preparation became much more regular and easier to track. I'm genuinely thankful to my tutor for being patient.

    Ana Cunha

  • AP Exams

    Over time, AP US Government became one of the most organized parts of my AP Exams preparation. My preparation became much more regular and easier to track.

    Signe Sorensen

  • AP Exams

    The AP Exams format felt unnecessarily confusing at first. I stopped doing a huge amount one week and nothing the next. I became much more careful with graphs, experiments and data-based questions. I was really happy with the lessons.

    Linnea Dudek

  • AP Exams

    Once I understood the reasons behind the facts, the questions felt less random. It was an intense period, but it was worth it.

    Bryce Mallory

  • AP Exams

    I chose AP US History this year and wanted to build a solid base from the beginning. We could make the workload lighter during busy weeks at school or university. I learned to make a short plan before starting a long response. I was really happy with the lessons.

    Vasco Antunes

  • AP Exams

    Everyone recommended different resources and I kept switching between them. One bad mock no longer made me want to drop the whole plan. A clear plan for the final weeks made priorities much easier to see. Using the mark scheme to review my own answer was surprisingly helpful. Knowing what to study reduced a lot of the stress. I was really happy with the lessons.

    Carla Cuevas

  • AP Exams

    Joining lessons willingly was one of the clearest signs for us. Online lessons made it possible to continue without losing time on travel. Seeing the change in our child made us very happy.

    Daniel Nolan

  • AP Exams

    What annoyed me most was losing easy points because I rushed. The plan changed with my mock and homework results, so the work never felt random. The mocks showed where my time was actually being lost. Using the mark scheme to review my own answer was surprisingly helpful. I wasn't trying to learn new topics at the very last minute. Thanks to TestPrep for helping me stay on track.

    Noelia Aguirre

  • AP Exams

    Our child wasn't sure how to organize the preparation for AP Exams. Preparation looked calmer and more organized closer to the exam.

    Danilo Teixeira

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500+ students supported|4.9/5 rating

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