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

  • IB Diploma

    When I started preparing for IB Diploma, I wasn't sure what order to study things in. I finally understood what was going wrong in IB World History. When I got something wrong, we looked at why I chose that answer instead of only checking the solution. Connecting examples back to the main point made my writing more consistent. Knowing what to study reduced a lot of the stress. The preparation felt calmer than I expected.

    Rina Mori

  • IB Diploma

    Keeping school units and exam preparation in the same plan worked really well. Over time, IB English B became one of the most organized parts of my IB Diploma preparation. I went into the exam much calmer than I would have before. I was really happy with the lessons.

    Claire Ellison

  • IB Diploma

    Keeping up with IB Diploma while school was busy was harder than I expected. Thanks to TestPrep for helping me stay on track.

    Phuong Le

  • IB Diploma

    I wasn't starting from zero, but the same mistakes kept showing up in my mocks. Going back to the lesson recordings helped when I forgot a small step. Using the mark scheme to review my own answer was surprisingly helpful. Thanks to everyone who supported me.

    Dylan Corbett

  • IB Diploma

    We were able to follow the mock results regularly. We quickly felt that the tutor was a good match.

    Lucie Faure

  • IB Diploma

    Focusing on past papers and mock review worked well near the exam. Breaking IB Biology into smaller pieces worked much better for me. I left the exam feeling that I had done what I could. A big thank you to my tutor for all the support :)

    Marta Cunha

  • IB Diploma

    I was close to my target, but my results changed a lot from one test to the next. One bad mock no longer made me want to drop the whole plan. Focusing on past papers and mock review worked well near the exam. Separating strategy mistakes from content gaps made progress much quicker. I started noticing the reason for a mistake much faster. Thanks to everyone who supported me.

    Cody Wakefield

  • IB Diploma

    Everyone recommended different resources and I kept switching between them. Thanks to everyone who supported me.

    Brooke Franklin

  • IB Diploma

    When I started preparing for IB Diploma, I wasn't sure what order to study things in. My tutor could see my reasoning and usually found the source of an error quickly. I became much more comfortable asking questions in class. I was really happy with the lessons.

    Amandine Perrin

  • IB Diploma

    The feedback I received on IB World History was clear and practical. Source questions became easier once I noticed how small details affected the mark. I left the exam feeling that I had done what I could.

    Bonnie Harcourt

  • IB Diploma

    Lesson times could fit around school, university or work. The feedback I received on IB English B was clear and practical. My confidence improved along with the results. The preparation felt calmer than I expected.

    Eunji Seo

  • IB Diploma

    Keeping up with IB Diploma while school was busy was harder than I expected. After enough examples of the same question type, the repeated mistakes decreased. My confidence improved along with the results. I was really happy with the lessons.

    Thomas Redmond

  • 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

  • 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

  • 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

  • IB Diploma

    The feedback I received on IB Mathematics AA was clear and practical. My mock results gradually became more consistent.

    Diya Basu

  • IB Diploma

    I finally understood what was going wrong in IB Geography. My preparation became much more regular and easier to track.

    Brooklyn Whitman

  • IB Diploma

    Even in a group lesson, the tutor knew where each of us stood. Over time, IB Global Politics became one of the most organized parts of my IB Diploma preparation. I left the exam feeling that I had done what I could. Thank you to my tutor and the TestPrep team.

    Dewi Hidayat

  • IB Diploma

    Breaking IB English A into smaller pieces worked much better for me. 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. There was no overnight miracle, but the progress was easy to see. My confidence improved along with the results. Thanks to TestPrep for helping me stay on track.

    Adrian Reyes

  • IB Diploma

    As the exam got closer, I wasn't sure what I should actually review. A clear plan for the final weeks made priorities much easier to see. Breaking the draft into smaller parts made it feel much more doable. My tutor made it easy to ask questions from the first lesson. Focusing on past papers and mock review worked well near the exam. I was really happy with the lessons.

    Joonho Ahn

  • IB Diploma

    The IB Diploma format felt unnecessarily confusing at first. The plan changed with my mock and homework results, so the work never felt random. We balanced current school topics with past-paper practice. Knowing the criteria from the start made the whole task less vague. I wasn't trying to learn new topics at the very last minute. Thanks to TestPrep for helping me stay on track.

    Gabriela Varela

  • IB Diploma

    I chose IB Physics this year and wanted to build a solid base from the beginning. Full-length mocks helped me get used to the real exam pace. I became much more careful with graphs, experiments and data-based questions. When I got something wrong, we looked at why I chose that answer instead of only checking the solution. Experiencing the exam format beforehand made test day much less stressful. Thanks to TestPrep for helping me stay on track.

    Davide Testa

  • IB Diploma

    Once I understood the reasons behind the facts, the questions felt less random. Thanks to everyone who supported me.

    Ananya Ahuja

  • IB Diploma

    I wasn't starting from zero, but the same mistakes kept showing up in my mocks. A big thank you to my tutor for all the support :)

    Bram Peeters

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