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

    We noticed that the resources kept changing during independent study. The tutor's close attention to weaker areas gave us confidence. Seeing the change in our child made us very happy.

    Nathan Teague

  • IB Diploma

    I finally understood what was going wrong in IB English B. Discussing why the other choices were wrong helped more than I expected. Knowing what to study reduced a lot of the stress.

    Felipe Cordero

  • IB Diploma

    I was taking IB Global Politics at school, but getting used to the exam questions took time. I never felt awkward asking the same thing again. I stopped listing facts in essays and started building an actual argument. I was really happy with the lessons.

    Bruno Pinheiro

  • IB Diploma

    Over time, IB Mathematics AI became one of the most organized parts of my IB Diploma preparation. There was no overnight miracle, but the progress was easy to see.

    Anan Srisai

  • IB Diploma

    When I started preparing for IB Diploma, I wasn't sure what order to study things in. After each test, we looked beyond the score and reviewed the type of each mistake. I went into the exam much calmer than I would have before. I'm genuinely thankful to my tutor for being patient.

    Mafalda Correia

  • IB Diploma

    Keeping up with IB Diploma while school was busy was harder than I expected. Having the lesson move at my pace made the process feel much easier. Practicing in the real exam format made test day feel much less unfamiliar. Going back to the lesson recordings helped when I forgot a small step. We didn't spend extra time on things I already knew. Thank you to the tutor who stayed supportive until the end.

    Bruno Espinoza

  • IB Diploma

    When I started preparing for IB Diploma, I wasn't sure what order to study things in. The group never had more than six students, so it was easy to stay involved. My confidence improved along with the results. Thanks to TestPrep for helping me stay on track.

    Andrea Giordano

  • IB Diploma

    Our son's school schedule was already very busy. Mistakes became something to work on rather than something to feel bad about. Communication with the team was straightforward and our questions were answered. Full-length tests showed how time was being used across the exam. The plan was adjusted when school exams became busy. Thank you sincerely to everyone involved.

    Florencia Villalba

  • IB Diploma

    I was doing questions for IB Physics on my own but never had a steady routine. The plan changed with my mock and homework results, so the work never felt random. Knowing the topic wasn't always enough; I had to learn which information the question actually needed. Thank you to my tutor and the TestPrep team.

    Gavin Hastings

  • IB Diploma

    A good connection with the tutor developed quite quickly. Joining lessons willingly was one of the clearest signs for us. We were happy with both the teaching and the communication.

    Bram Schmitz

  • IB Diploma

    I finally understood what was going wrong in IB Mathematics AA. Going back to the lesson recordings helped when I forgot a small step. We focused more on understanding what the problem asked than memorizing formulas. After a while, the questions started to feel much more familiar. My preparation became much more regular and easier to track. Thank you to the tutor who stayed supportive until the end.

    Cassidy Holloway

  • IB Diploma

    The feedback I received on IB Mathematics AA was clear and practical. Near the exam, it was clear what to keep doing and what to stop. A quick check after each answer helped me catch small mistakes. I went into the exam much calmer than I would have before. There was no overnight miracle, but the progress was easy to see. A big thank you to my tutor for all the support :)

    Cody Wylie

  • IB Diploma

    I chose IB Physics this year and wanted to build a solid base from the beginning. My preparation became much more regular and easier to track.

    Junseo Cho

  • IB Diploma

    When I started preparing for IB Diploma, I wasn't sure what order to study things in. Full-length mocks helped me get used to the real exam pace. My confidence improved along with the results. Thanks to everyone who supported me.

    Ebba Bakke

  • IB Diploma

    It was good to see confidence returning over time. Seeing the change in our child made us very happy.

    Irene Caldeira

  • IB Diploma

    Our son's school schedule was already very busy. The plan was adjusted when school exams became busy. We thank the tutor and the TestPrep team.

    Ebba Horvat

  • IB Diploma

    We weren't sure whether online lessons would be effective. The lessons started being followed without constant reminders from us. Seeing the change in our child made us very happy.

    Kunal Kapoor

  • IB Diploma

    Everyone recommended different resources and I kept switching between them. I wasn't trying to learn new topics at the very last minute.

    Hyunwoo Sim

  • IB Diploma

    I was taking Theory of Knowledge (TOK) at school, but getting used to the exam questions took time. I never felt awkward asking the same thing again. We were realistic about what could be improved in the time available. The feedback helped me improve my own work without writing it for me. I left the exam feeling that I had done what I could. Thanks to TestPrep for helping me stay on track.

    Klara Visser

  • IB Diploma

    Breaking Extended Essay (EE) into smaller pieces worked much better for me. My mock results gradually became more consistent.

    Diogo Cabrera

  • IB Diploma

    Over time, IB Psychology 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. My confidence improved along with the results. I left the exam feeling that I had done what I could. I was really happy with the lessons.

    Yash Menon

  • IB Diploma

    Over time, IB Turkish A became one of the most organized parts of my IB Diploma preparation. I went into the exam much calmer than I would have before.

    Marcos Prieto

  • IB Diploma

    The IB Diploma format felt unnecessarily confusing at first. Having the lesson move at my pace made the process feel much easier. I left the exam feeling that I had done what I could. Thank you to the tutor who stayed supportive until the end.

    Camila Braga

  • IB Diploma

    I was close to my target, but my results changed a lot from one test to the next. Thanks to TestPrep for helping me stay on track.

    Krit Thongdee

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500+ students supported|4.9/5 rating

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