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

  • GRE General

    I had collected too many resources without knowing when to use any of them. One bad mock no longer made me want to drop the whole plan. Discussing why the other choices were wrong helped more than I expected. I'm glad I worked with my tutor through this process.

    Duy Le

  • Digital SAT

    Over time, Reading & Writing became one of the most organized parts of my Digital SAT preparation. Discussing why the other choices were wrong helped more than I expected. My mock results gradually became more consistent.

    Lea Renard

  • AP Exams

    Keeping up with AP Exams while school was busy was harder than I expected. Breaking AP Calculus BC into smaller pieces worked much better for me. Going back to the lesson recordings helped when I forgot a small step. I started seeing shorter solutions that were easier to check under time pressure. My preparation became much more regular and easier to track. The preparation felt calmer than I expected.

    Carolina Marques

  • AP Exams

    The feedback I received on AP English Language was clear and practical. My tutor made it easy to ask questions from the first lesson. I stopped choosing answers by feel and started looking for evidence in the passage. My confidence improved along with the results. I started noticing the reason for a mistake much faster. I was really happy with the lessons.

    Nathan Underwood

  • IB Diploma

    After my first attempt, I wanted the second round of preparation to feel more organized. I left the exam feeling that I had done what I could.

    Nuria Simoes

  • TOEFL iBT

    Breaking Speaking into smaller pieces worked much better for me. I developed a clearer way to return to the text during reading questions. My mock results gradually became more consistent.

    Zoe Rafferty

  • GRE General

    I had collected too many resources without knowing when to use any of them. I became much more comfortable asking questions in class.

    Lucy Palmer

  • YÖS / TR-YÖS

    The YÖS / TR-YÖS format felt unnecessarily confusing at first. My confidence improved along with the results.

    Hina Maeda

  • SSAT

    I was taking Reading at school, but getting used to the exam questions took time. Thank you to my tutor and the TestPrep team.

    Brodie Redfern

  • GRE General

    Over time, Section-Adaptive Strategy became one of the most organized parts of my GRE General preparation. My mock results gradually became more consistent.

    Darcy Whitlam

  • Digital SAT

    We noticed that the resources kept changing during independent study. Preparation looked calmer and more organized closer to the exam. The tutor supported regular study, not only the lesson content. Regular mocks built familiarity with the real exam pace. The overall experience was positive from beginning to end.

    Joel McIntyre

  • IMAT

    I finally understood what was going wrong in Physics. We could make the workload lighter during busy weeks at school or university. 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.

    Nari Yang

  • IB Diploma

    Over time, IB Turkish A became one of the most organized parts of my IB Diploma preparation. I never felt awkward asking the same thing again. I worked on keeping a steady pace instead of rushing the easy questions. There was no overnight miracle, but the progress was easy to see. I went into the exam much calmer than I would have before. A big thank you to my tutor for all the support :)

    Kavya Tandon

  • IGCSE / GCSE

    The feedback I received on IGCSE Additional Mathematics was clear and practical. I started tracking the type of mistake, not just the number of questions I completed. Seeing several versions of the same topic made unfamiliar questions less stressful. I wasn't trying to learn new topics at the very last minute. After a while, the questions started to feel much more familiar. Thank you to my tutor and the TestPrep team.

    Jakub Moen

  • AP Exams

    At the beginning, we knew very little about the AP Exams system as parents. Online lessons made it possible to continue without losing time on travel.

    Sora Sung

  • IB Diploma

    Joining lessons willingly was one of the clearest signs for us. It was good to see confidence returning over time. Seeing the change in our child made us very happy.

    Petra Kaczmarek

  • ACT

    Our child had a clear goal but no steady study routine. Mistakes became something to work on rather than something to feel bad about. We were able to follow the mock results regularly. A realistic plan for the final weeks reduced stress for the whole family. Communication with the team was straightforward and our questions were answered. We were pleased with the support we received.

    Sienna Lindley

  • AP Exams

    I chose AP Chemistry this year and wanted to build a solid base from the beginning. My tutor usually asked me to explain my thinking before stepping in. Past-paper questions showed me how different topics could appear together. Thanks to TestPrep for helping me stay on track.

    Bruna Campos

  • IGCSE / GCSE

    Over time, IGCSE Mathematics 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. Seeing several versions of the same topic made unfamiliar questions less stressful. There was no overnight miracle, but the progress was easy to see. I became much more comfortable asking questions in class. The preparation felt calmer than I expected.

    Tolga Bilgin

  • IGCSE / GCSE

    The feedback I received on IGCSE Geography was clear and practical. I never felt awkward asking the same thing again. Source questions became easier once I noticed how small details affected the mark. I started noticing the reason for a mistake much faster. My confidence improved along with the results. Thank you to the tutor who stayed supportive until the end.

    Jade Banfield

  • PTE Academic

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

    Jonas Bakker

  • AP Exams

    We wanted our child to keep up with the school pace in AP Chemistry. We thank the tutor and the TestPrep team.

    Alessia Caruso

  • UCAT

    What annoyed me most was losing easy points because I rushed. My tutor usually asked me to explain my thinking before stepping in. Working across different difficulty levels made new questions feel less surprising. I can now decide much faster when to move on from a question. After a while, the questions started to feel much more familiar. A big thank you to my tutor for all the support :)

    Rui Chen

  • IELTS Academic

    Over time, Writing Task 2 became one of the most organized parts of my IELTS Academic preparation. I started tracking the type of mistake, not just the number of questions I completed. It took time to stop worrying about mistakes in speaking practice, but the lessons felt relaxed. I wasn't trying to learn new topics at the very last minute. I'm genuinely thankful to my tutor for being patient.

    Nathan Paterson

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