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

    Anxiety became more visible as the exam got closer. The tutor's close attention to weaker areas gave us confidence. Seeing the change in our child made us very happy.

    Seulgi Kang

  • IB Diploma

    I finally understood what was going wrong in IB Biology. I never felt awkward asking the same thing again. Separating calculation errors from content gaps made revision more useful. There was no overnight miracle, but the progress was easy to see. My mock results gradually became more consistent. Thanks to everyone who supported me.

    Miles Harcourt

  • IB Diploma

    The IB Diploma format felt unnecessarily confusing at first. The feedback I received on IB Philosophy was clear and practical. 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 became much more comfortable asking questions in class. Thank you to my tutor and the TestPrep team.

    Lea Pascal

  • IB Diploma

    What annoyed me most was losing easy points because I rushed. I started tracking the type of mistake, not just the number of questions I completed. Connecting examples back to the main point made my writing more consistent. Thank you to my tutor and the TestPrep team.

    Pinar Korkmaz

  • IB Diploma

    We noticed that the resources kept changing during independent study. It was good to see confidence returning over time. Individual lesson time was used around our child's actual needs. Preparation looked calmer and more organized closer to the exam. We were able to follow the mock results regularly. We quickly felt that the tutor was a good match.

    Derya Korkmaz

  • IB Diploma

    I chose IB Mathematics AI this year and wanted to build a solid base from the beginning. Having the lesson move at my pace made the process feel much easier. After a while, the questions started to feel much more familiar. Thanks to TestPrep for helping me stay on track.

    Lorenzo Rizzo

  • IB Diploma

    The feedback I received on IB English B was clear and practical. Going back to the lesson recordings helped when I forgot a small step. My written answers became shorter, clearer and easier to follow. I wasn't trying to learn new topics at the very last minute. My mock results gradually became more consistent. The preparation felt calmer than I expected.

    Ayaka Yoshida

  • IB Diploma

    I finally understood what was going wrong in IB TITC. Near the exam, it was clear what to keep doing and what to stop. I worked on keeping a steady pace instead of rushing the easy questions. My confidence improved along with the results. I went into the exam much calmer than I would have before. I'm genuinely thankful to my tutor for being patient.

    Isabela Godoy

  • IB Diploma

    We didn't spend extra time on things I already knew. Breaking IB English B into smaller pieces worked much better for me. I left the exam feeling that I had done what I could. I was really happy with the lessons.

    Maddison Connors

  • IB Diploma

    The feedback I received on IB Chemistry was clear and practical. I found a better balance between regular school and exam preparation.

    Burak Bilgin

  • IB Diploma

    We wanted our child to keep up with the school pace in IB ESS. Thank you sincerely to everyone involved.

    Trent Templeton

  • IB Diploma

    Over time, Extended Essay (EE) became one of the most organized parts of my IB Diploma preparation. Breaking the draft into smaller parts made it feel much more doable. I found a better balance between regular school and exam preparation.

    Koen Brandt

  • IB Diploma

    After the first attempt, we looked for a calmer plan for the retake. Communication with the team was straightforward and our questions were answered. Returning to actual gaps instead of restarting everything saved time. A good connection with the tutor developed quite quickly. Mistakes became something to work on rather than something to feel bad about. Seeing the change in our child made us very happy.

    Minh Vu

  • IB Diploma

    Breaking IB Chemistry 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. Past-paper questions showed me how different topics could appear together. My mock results gradually became more consistent. I left the exam feeling that I had done what I could. Thanks to TestPrep for helping me stay on track.

    Jihoon Yoon

  • IB Diploma

    As the exam got closer, I wasn't sure what I should actually review. I finally understood what was going wrong in IB ESS. We could make the workload lighter during busy weeks at school or university. Separating calculation errors from content gaps made revision more useful. My preparation became much more regular and easier to track. Thank you to my tutor and the TestPrep team.

    Eleanor Chandler

  • IB Diploma

    Knowing the topic wasn't always enough; I had to learn which information the question actually needed. Thank you to the tutor who stayed supportive until the end.

    Pauline Roussel

  • IB Diploma

    I was taking Theory of Knowledge (TOK) at school, but getting used to the exam questions took time. I finally understood what was going wrong in Theory of Knowledge (TOK). I started tracking the type of mistake, not just the number of questions I completed. Knowing the criteria from the start made the whole task less vague. I found a better balance between regular school and exam preparation. The preparation felt calmer than I expected.

    Carter Brooks

  • IB Diploma

    Over time, IB Global Politics became one of the most organized parts of my IB Diploma preparation. The plan changed with my mock and homework results, so the work never felt random. I stopped listing facts in essays and started building an actual argument. I went into the exam much calmer than I would have before. I became much more comfortable asking questions in class. Thanks to everyone who supported me.

    Maddison Quade

  • IB Diploma

    Over time, IB Computer Science became one of the most organized parts of my IB Diploma preparation. I started noticing the reason for a mistake much faster.

    Diya Nair

  • IB Diploma

    We noticed that the resources kept changing during independent study. Preparation looked calmer and more organized closer to the exam.

    Jisoo Ma

  • IB Diploma

    I finally understood what was going wrong in IB Mathematics AA. I started seeing shorter solutions that were easier to check under time pressure. I left the exam feeling that I had done what I could.

    Bima Kurniawan

  • IB Diploma

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

    Kunal Sethi

  • IB Diploma

    I was doing questions for Theory of Knowledge (TOK) on my own but never had a steady routine. After each test, we looked beyond the score and reviewed the type of each mistake. I realized that choosing a topic, researching and revising each needed its own deadline. The plan changed with my mock and homework results, so the work never felt random. It was an intense period, but it was worth it.

    Kabir Sethi

  • IB Diploma

    The class felt relaxed enough to ask questions without overthinking it. Breaking IB Business Management into smaller pieces worked much better for me. I wasn't trying to learn new topics at the very last minute. I'm glad I worked with my tutor through this process.

    Agustin Ibarra

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500+ students supported|4.9/5 rating

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