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

  • ACT

    I wasn't starting from zero, but the same mistakes kept showing up in my mocks. Breaking Optional Writing 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. I learned not to spend the same amount of time on every line of a long text. After a while, the questions started to feel much more familiar. Thank you to my tutor and the TestPrep team.

    Hilal Bilgin

  • ACT

    When I started preparing for ACT, I wasn't sure what order to study things in. My tutor made it easy to ask questions from the first lesson. Questions from other students often helped me as well. I learned not to spend the same amount of time on every line of a long text. I became much more comfortable asking questions in class. Thanks to everyone who supported me.

    Kazuki Yamada

  • ACT

    Our daughter needed regular support with ACT English. Seeing the change in our child made us very happy.

    Gael Rolland

  • ACT

    Our son's school schedule was already very busy. A good connection with the tutor developed quite quickly. Preparation looked calmer and more organized closer to the exam. Mock analysis allowed us to follow progress more clearly. Online lessons made it possible to continue without losing time on travel. We thank the tutor and the TestPrep team.

    Baran Aydin

  • ACT

    Seeing several versions of the same topic made unfamiliar questions less stressful. It was an intense period, but it was worth it.

    Minseok Pyo

  • ACT

    Everyone recommended different resources and I kept switching between them. After each test, we looked beyond the score and reviewed the type of each mistake. My preparation became much more regular and easier to track. The preparation felt calmer than I expected.

    Sebastian Arriaga

  • ACT

    When I started preparing for ACT, I wasn't sure what order to study things in. I became much more comfortable asking questions in class.

    Katarina Horvat

  • ACT

    The mocks showed where my time was actually being lost. The feedback I received on ACT Science was clear and practical. My preparation became much more regular and easier to track. Thank you to my tutor and the TestPrep team.

    Alyssa Castillo

  • ACT

    Over time, ACT Math became one of the most organized parts of my ACT preparation. My tutor made it easy to ask questions from the first lesson. Seeing several versions of the same topic made unfamiliar questions less stressful. I became much more comfortable asking questions in class. I found a better balance between regular school and exam preparation. The preparation felt calmer than I expected.

    Mert Uzun

  • ACT

    Anxiety became more visible as the exam got closer. We quickly felt that the tutor was a good match.

    Sergio Gallardo

  • ACT

    The feedback I received on ACT Science was clear and practical. Separating calculation errors from content gaps made revision more useful. I became much more comfortable asking questions in class.

    Luciana Carranza

  • ACT

    When I started preparing for ACT, I wasn't sure what order to study things in. We were realistic about what could be improved in the time available. There was no overnight miracle, but the progress was easy to see. It was an intense period, but it was worth it.

    Lorena Renteria

  • ACT

    I wasn't starting from zero, but the same mistakes kept showing up in my mocks. Experiencing the exam format beforehand made test day much less stressful. My preparation became much more regular and easier to track. The preparation felt calmer than I expected.

    Kerem Cakir

  • ACT

    The class felt relaxed enough to ask questions without overthinking it. Over time, Time Management became one of the most organized parts of my ACT preparation. My preparation became much more regular and easier to track. I was really happy with the lessons.

    Edoardo Bernardi

  • ACT

    Our child had a clear goal but no steady study routine. 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. Communication with the team was straightforward and our questions were answered. The overall experience was positive from beginning to end.

    Claudia Tavares

  • ACT

    What annoyed me most was losing easy points because I rushed. Near the exam, it was clear what to keep doing and what to stop. A lot of my mistakes came from rushing through the wording of the question. A big thank you to my tutor for all the support :)

    Jasmine Langford

  • ACT

    The feedback I received on ACT Science was clear and practical. When I got something wrong, we looked at why I chose that answer instead of only checking the solution. Past-paper questions showed me how different topics could appear together. Knowing what to study reduced a lot of the stress. I found a better balance between regular school and exam preparation. Thanks to everyone who supported me.

    Nico Kramer

  • ACT

    When I started preparing for ACT, I wasn't sure what order to study things in. The plan changed with my mock and homework results, so the work never felt random. Once I understood the reasons behind the facts, the questions felt less random. Thank you to the tutor who stayed supportive until the end.

    Maddison Pemberton

  • ACT

    Over time, ACT Science became one of the most organized parts of my ACT preparation. My tutor usually asked me to explain my thinking before stepping in. Once I understood the reasons behind the facts, the questions felt less random. I became much more comfortable asking questions in class. I found a better balance between regular school and exam preparation. I was really happy with the lessons.

    Hina Kato

  • ACT

    Even in a group lesson, the tutor knew where each of us stood. Over time, ACT Math became one of the most organized parts of my ACT preparation. My confidence improved along with the results. Thanks to TestPrep for helping me stay on track.

    Noemi Gallo

  • ACT

    At the beginning, we knew very little about the ACT system as parents. The question bank made independent work between lessons much clearer. It was good to see confidence returning over time. Mistakes became something to work on rather than something to feel bad about. We were happy with both the teaching and the communication.

    Ramiro Aguirre

  • ACT

    Our child wasn't sure how to organize the preparation for ACT. Online lessons made it possible to continue without losing time on travel. Seeing the change in our child made us very happy.

    Andrea Ibarra

  • ACT

    I was taking Time Management at school, but getting used to the exam questions took time. Even in a group lesson, the tutor knew where each of us stood. Practicing in the real exam format made test day feel much less unfamiliar. I stopped doing a huge amount one week and nothing the next. The group never had more than six students, so it was easy to stay involved. The preparation felt calmer than I expected.

    Paige Dean

  • ACT

    We weren't sure whether online lessons would be effective. Online lessons made it possible to continue without losing time on travel. We were pleased with the support we received.

    Leticia Leite

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