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

  • IGCSE / GCSE

    The lessons where I found the bug myself were the ones I remembered best. Thank you to the tutor who stayed supportive until the end.

    Mathis Morel

  • IGCSE / GCSE

    The feedback I received on IGCSE Economics was clear and practical. We could make the workload lighter during busy weeks at school or university. Balancing Quant and Verbal in the same week worked better than studying them in blocks. My mock results gradually became more consistent. Thank you to my tutor and the TestPrep team.

    Carlo Reyes

  • IGCSE / GCSE

    Breaking IGCSE Economics into smaller pieces worked much better for me. There was no overnight miracle, but the progress was easy to see.

    Bora Min

  • IGCSE / GCSE

    Breaking IGCSE Statistics into smaller pieces worked much better for me. My tutor made it easy to ask questions from the first lesson. We focused more on understanding what the problem asked than memorizing formulas. I started noticing the reason for a mistake much faster. My confidence improved along with the results. Thank you to my tutor and the TestPrep team.

    Lautaro Tellez

  • IGCSE / GCSE

    Seeing several versions of the same topic made unfamiliar questions less stressful. Thank you to the tutor who stayed supportive until the end.

    Francesca Marchetti

  • IGCSE / GCSE

    Over time, IGCSE Art and Design became one of the most organized parts of my IGCSE / GCSE preparation. My mock results gradually became more consistent.

    Alana McGrath

  • IGCSE / GCSE

    After the first attempt, we looked for a calmer plan for the retake. The lessons started being followed without constant reminders from us. Preparation looked calmer and more organized closer to the exam. Past-paper work continued without falling behind in current school topics. The plan was adjusted when school exams became busy. We quickly felt that the tutor was a good match.

    Finn Gilmour

  • IGCSE / GCSE

    I chose IGCSE Business Studies this year and wanted to build a solid base from the beginning. I stopped doing a huge amount one week and nothing the next. Choosing questions by topic made my practice time much more useful. With data-heavy questions, I began reading the task before getting lost in the table. I left the exam feeling that I had done what I could. I'm glad I worked with my tutor through this process.

    Buse Akbulut

  • IGCSE / GCSE

    Our daughter needed regular support with IGCSE Additional Mathematics. We were able to follow the mock results regularly. We thank the tutor and the TestPrep team.

    Connor Tully

  • IGCSE / GCSE

    After my first attempt, I wanted the second round of preparation to feel more organized. 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. The plan changed with my mock and homework results, so the work never felt random. I'm genuinely thankful to my tutor for being patient.

    Gavin Franklin

  • IGCSE / GCSE

    I was close to my target, but my results changed a lot from one test to the next. Over time, IGCSE Psychology became one of the most organized parts of my IGCSE / GCSE preparation. The plan changed with my mock and homework results, so the work never felt random. Source questions became easier once I noticed how small details affected the mark. I started noticing the reason for a mistake much faster. It was an intense period, but it was worth it.

    Valentin Picard

  • IGCSE / GCSE

    I was taking IGCSE Sociology at school, but getting used to the exam questions took time. I used the question bank regularly to return to weaker topics. I found a better balance between regular school and exam preparation. I was really happy with the lessons.

    Claire McMillan

  • IGCSE / GCSE

    Having the lesson move at my pace made the process feel much easier. Breaking IGCSE Psychology into smaller pieces worked much better for me. There was no overnight miracle, but the progress was easy to see. Thank you to the tutor who stayed supportive until the end.

    Isadora Azevedo

  • IGCSE / GCSE

    The IGCSE / GCSE format felt unnecessarily confusing at first. Over time, IGCSE Economics became one of the most organized parts of my IGCSE / GCSE preparation. I started tracking the type of mistake, not just the number of questions I completed. Balancing Quant and Verbal in the same week worked better than studying them in blocks. I found a better balance between regular school and exam preparation. Thank you to my tutor and the TestPrep team.

    Paula Baez

  • IGCSE / GCSE

    The feedback I received on IGCSE Psychology was clear and practical. Connecting examples back to the main point made my writing more consistent. After a while, the questions started to feel much more familiar.

    Marit Peters

  • IGCSE / GCSE

    The feedback I received on IGCSE Economics was clear and practical. I went into the exam much calmer than I would have before.

    Tomas Novak

  • IGCSE / GCSE

    After my first attempt, I wanted the second round of preparation to feel more organized. Having the lesson move at my pace made the process feel much easier. Using the mark scheme to review my own answer was surprisingly helpful. By the end of each lesson, I knew what I was supposed to do during the week. We didn't spend extra time on things I already knew. I'm glad I worked with my tutor through this process.

    Linh Huynh

  • IGCSE / GCSE

    Everyone recommended different resources and I kept switching between them. I finally understood what was going wrong in IGCSE Biology. One bad mock no longer made me want to drop the whole plan. Once I understood the reasons behind the facts, the questions felt less random. There was no overnight miracle, but the progress was easy to see. Thank you to the tutor who stayed supportive until the end.

    Danica Peric

  • IGCSE / GCSE

    After the first attempt, we looked for a calmer plan for the retake. We were pleased with the support we received.

    Avery Whitaker

  • IGCSE / GCSE

    Over time, IGCSE Chemistry became one of the most organized parts of my IGCSE / GCSE preparation. My tutor made it easy to ask questions from the first lesson. I became much more careful with graphs, experiments and data-based questions. I started noticing the reason for a mistake much faster. After a while, the questions started to feel much more familiar. It was an intense period, but it was worth it.

    Blake Carver

  • IGCSE / GCSE

    Having the lesson move at my pace made the process feel much easier. Over time, IGCSE Mathematics became one of the most organized parts of my IGCSE / GCSE preparation. I started noticing the reason for a mistake much faster. I was really happy with the lessons.

    Linh Nguyen

  • IGCSE / GCSE

    I wasn't starting from zero, but the same mistakes kept showing up in my mocks. I used the question bank regularly to return to weaker topics. My mock results gradually became more consistent. I was really happy with the lessons.

    Ashleigh Wakefield

  • IGCSE / GCSE

    I wasn't starting from zero, but the same mistakes kept showing up in my mocks. The mocks showed where my time was actually being lost. I became much more comfortable asking questions in class. The preparation felt calmer than I expected.

    Georgia Connolly

  • IGCSE / GCSE

    Over time, IGCSE Economics became one of the most organized parts of my IGCSE / GCSE preparation. I stopped doing a huge amount one week and nothing the next. My case responses became more organized and direct. Knowing what to study reduced a lot of the stress. I found a better balance between regular school and exam preparation. I'm genuinely thankful to my tutor for being patient.

    Facundo Canales

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