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

    Lesson times could fit around school, university or work. The feedback I received on AP Human Geography was clear and practical. I found a better balance between regular school and exam preparation. A big thank you to my tutor for all the support :)

    Kayla Monroe

  • AP Exams

    Using the mark scheme to review my own answer was surprisingly helpful. I'm glad I worked with my tutor through this process.

    Zoe Lindley

  • AP Exams

    The feedback I received on AP Psychology was clear and practical. By the end of each lesson, I knew what I was supposed to do during the week. I learned to make a short plan before starting a long response. There was no overnight miracle, but the progress was easy to see. I started noticing the reason for a mistake much faster. I'm glad I worked with my tutor through this process.

    Amanda Vieira

  • AP Exams

    With data-heavy questions, I began reading the task before getting lost in the table. It was an intense period, but it was worth it.

    Joel Shepard

  • AP Exams

    Everyone recommended different resources and I kept switching between them. Lesson times could fit around school, university or work. My written answers became shorter, clearer and easier to follow. I started tracking the type of mistake, not just the number of questions I completed. I'm genuinely thankful to my tutor for being patient.

    Colin Vaughn

  • AP Exams

    When I started preparing for AP Exams, I wasn't sure what order to study things in. My tutor made it easy to ask questions from the first lesson. Separating calculation errors from content gaps made revision more useful. Thank you to the tutor who stayed supportive until the end.

    Ren Kimura

  • AP Exams

    Breaking AP US Government into smaller pieces worked much better for me. Using the mark scheme to review my own answer was surprisingly helpful. My confidence improved along with the results.

    Logan Prescott

  • AP Exams

    I was taking AP Physics 2 at school, but getting used to the exam questions took time. We didn't spend extra time on things I already knew. My preparation became much more regular and easier to track. I'm genuinely thankful to my tutor for being patient.

    Teagan Russell

  • AP Exams

    After my first attempt, I wanted the second round of preparation to feel more organized. The feedback I received on AP Statistics was clear and practical. I never felt awkward asking the same thing again. I started seeing shorter solutions that were easier to check under time pressure. There was no overnight miracle, but the progress was easy to see. Thank you to my tutor and the TestPrep team.

    Yating Jiang

  • AP Exams

    Breaking AP Computer Science Principles into smaller pieces worked much better for me. My confidence improved along with the results.

    Bruna Nunes

  • AP Exams

    I finally understood what was going wrong in AP Calculus BC. I stopped doing a huge amount one week and nothing the next. A quick check after each answer helped me catch small mistakes. I became much more comfortable asking questions in class. After a while, the questions started to feel much more familiar. Thank you to the tutor who stayed supportive until the end.

    Woojin Jin

  • AP Exams

    The feedback I received on AP English Literature was clear and practical. Near the exam, it was clear what to keep doing and what to stop. Discussing why the other choices were wrong helped more than I expected. My mock results gradually became more consistent. My preparation became much more regular and easier to track. A big thank you to my tutor for all the support :)

    Linnea Wozniak

  • AP Exams

    As the exam got closer, I wasn't sure what I should actually review. After each test, we looked beyond the score and reviewed the type of each mistake. I started tracing code line by line instead of only reading it quickly. I never felt awkward asking the same thing again. Experiencing the exam format beforehand made test day much less stressful. I'm glad I worked with my tutor through this process.

    Fabien Couturier

  • AP Exams

    I chose AP English Language this year and wanted to build a solid base from the beginning. During the intensive review, we returned to real gaps instead of restarting everything. I became much more comfortable asking questions in class. Thank you to the tutor who stayed supportive until the end.

    Rohan Shah

  • AP Exams

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

    Lotte Janssen

  • AP Exams

    What annoyed me most was losing easy points because I rushed. Thank you to my tutor and the TestPrep team.

    Meera Gowda

  • AP Exams

    After my first attempt, I wanted the second round of preparation to feel more organized. Breaking AP Art History into smaller pieces worked much better for me. I never felt awkward asking the same thing again. Reviewing my work against the criteria changed the way I edited it. I wasn't trying to learn new topics at the very last minute. I was really happy with the lessons.

    Fabio Mendes

  • AP Exams

    After my first attempt, I wanted the second round of preparation to feel more organized. 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. Connecting examples back to the main point made my writing more consistent. I started noticing the reason for a mistake much faster. I was really happy with the lessons.

    Enrico Marchetti

  • AP Exams

    I finally understood what was going wrong in AP European History. I wasn't trying to learn new topics at the very last minute.

    Lenka Lewandowski

  • AP Exams

    The AP Exams format felt unnecessarily confusing at first. Having the lesson move at my pace made the process feel much easier. Knowing the criteria from the start made the whole task less vague. My tutor made it easy to ask questions from the first lesson. We didn't spend extra time on things I already knew. It was an intense period, but it was worth it.

    Jaehyun Min

  • AP Exams

    I was doing questions for AP Art History on my own but never had a steady routine. One bad mock no longer made me want to drop the whole plan. Splitting time between research, making and editing kept the work manageable. Thank you to my tutor and the TestPrep team.

    Jasmine Newell

  • AP Exams

    Our child wasn't sure how to organize the preparation for AP Exams. Flexible scheduling helped during a demanding school year. Being able to fit lessons around school made the process easier. A good connection with the tutor developed quite quickly. Communication with the team was straightforward and our questions were answered. We thank the tutor and the TestPrep team.

    Rui Yuan

  • AP Exams

    I was close to my target, but my results changed a lot from one test to the next. Going back to the lesson recordings helped when I forgot a small step. After enough examples of the same question type, the repeated mistakes decreased. I understood that the portfolio needed to show the process, not only the finished piece. I found a better balance between regular school and exam preparation. It was an intense period, but it was worth it.

    Alejandra Coronel

  • AP Exams

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

    Natalia Varela

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500+ students supported|4.9/5 rating

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