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

    After enough examples of the same question type, the repeated mistakes decreased. I finally understood what was going wrong in IGCSE English. I went into the exam much calmer than I would have before. Thanks to TestPrep for helping me stay on track.

    Emilia Tamayo

  • IGCSE / GCSE

    Breaking IGCSE Geography into smaller pieces worked much better for me. I learned to make a short plan before starting a long response. My mock results gradually became more consistent.

    Quang Ngo

  • IGCSE / GCSE

    When I started preparing for IGCSE / GCSE, I wasn't sure what order to study things in. One bad mock no longer made me want to drop the whole plan. After enough examples of the same question type, the repeated mistakes decreased. Seeing several versions of the same topic made unfamiliar questions less stressful. My confidence improved along with the results. I'm genuinely thankful to my tutor for being patient.

    Nicha Chaisiri

  • IGCSE / GCSE

    I was taking IGCSE Art and Design at school, but getting used to the exam questions took time. We didn't spend extra time on things I already knew. I began using more specific examples when explaining my ideas. I never felt awkward asking the same thing again. Thank you to my tutor and the TestPrep team.

    Naoki Tamura

  • IGCSE / GCSE

    The mocks showed where my time was actually being lost. Over time, IGCSE Combined Science became one of the most organized parts of my IGCSE / GCSE preparation. I became much more comfortable asking questions in class. The preparation felt calmer than I expected.

    Skye McIntyre

  • IGCSE / GCSE

    After the first attempt, we looked for a calmer plan for the retake. A good connection with the tutor developed quite quickly. We thank the tutor and the TestPrep team.

    Flynn Clarke

  • IGCSE / GCSE

    The feedback I received on IGCSE Turkish was clear and practical. I can now decide much faster when to move on from a question. I left the exam feeling that I had done what I could.

    Corentin Lemoine

  • IGCSE / GCSE

    We didn't spend extra time on things I already knew. I finally understood what was going wrong in IGCSE Business Studies. My preparation became much more regular and easier to track. The preparation felt calmer than I expected.

    Flynn Finlay

  • IGCSE / GCSE

    It was good to see confidence returning over time. Thank you sincerely to everyone involved.

    Morgan Warren

  • IGCSE / GCSE

    We focused more on understanding what the problem asked than memorizing formulas. A big thank you to my tutor for all the support :)

    Martin Navarrete

  • IGCSE / GCSE

    I was close to my target, but my results changed a lot from one test to the next. My tutor could see my reasoning and usually found the source of an error quickly. I went into the exam much calmer than I would have before. Thank you to the tutor who stayed supportive until the end.

    Mette Babic

  • IGCSE / GCSE

    Everyone recommended different resources and I kept switching between them. Breaking IGCSE Accounting into smaller pieces worked much better for me. Near the exam, it was clear what to keep doing and what to stop. My case responses became more organized and direct. Knowing what to study reduced a lot of the stress. Thanks to everyone who supported me.

    Natalie Sutton

  • IGCSE / GCSE

    When I started preparing for IGCSE / GCSE, I wasn't sure what order to study things in. I never felt awkward asking the same thing again. Source questions became easier once I noticed how small details affected the mark. I was really happy with the lessons.

    Qiang Liang

  • IGCSE / GCSE

    As the exam got closer, I wasn't sure what I should actually review. During the intensive review, we returned to real gaps instead of restarting everything. Separating calculation errors from content gaps made revision more useful. I started tracking the type of mistake, not just the number of questions I completed. Focusing on past papers and mock review worked well near the exam. I was really happy with the lessons.

    Chihiro Nishimura

  • IGCSE / GCSE

    Over time, IGCSE English as a Second Language became one of the most organized parts of my IGCSE / GCSE preparation. Going back to the lesson recordings helped when I forgot a small step. I learned not to spend the same amount of time on every line of a long text. Knowing what to study reduced a lot of the stress. There was no overnight miracle, but the progress was easy to see. I'm glad I worked with my tutor through this process.

    Riley Sanderson

  • IGCSE / GCSE

    Keeping up with IGCSE / GCSE while school was busy was harder than I expected. One bad mock no longer made me want to drop the whole plan. I stopped choosing answers by feel and started looking for evidence in the passage. A big thank you to my tutor for all the support :)

    Imogen Jarvis

  • IGCSE / GCSE

    Everyone recommended different resources and I kept switching between them. I found a better balance between regular school and exam preparation.

    Hendrik Brandt

  • IGCSE / GCSE

    Mistakes became something to work on rather than something to feel bad about. A good connection with the tutor developed quite quickly. The overall experience was positive from beginning to end.

    Autumn Hastings

  • IGCSE / GCSE

    The plan was adjusted when school exams became busy. Mistakes became something to work on rather than something to feel bad about. We would recommend the program to students and families in a similar situation.

    Yaren Kartal

  • IGCSE / GCSE

    I wasn't starting from zero, but the same mistakes kept showing up in my mocks. Knowing what to study reduced a lot of the stress.

    Joaquin Paredes

  • IGCSE / GCSE

    Separating calculation errors from content gaps made revision more useful. Thank you to the tutor who stayed supportive until the end.

    Roxane Meunier

  • IGCSE / GCSE

    After the first attempt, we looked for a calmer plan for the retake. Communication with the team was straightforward and our questions were answered. Online lessons made it possible to continue without losing time on travel. Regular mocks built familiarity with the real exam pace. Joining lessons willingly was one of the clearest signs for us. The overall experience was positive from beginning to end.

    Bailey Rowntree

  • IGCSE / GCSE

    We wanted our child to keep up with the school pace in IGCSE Statistics. We were pleased with the support we received.

    Jiaqi Hu

  • IGCSE / GCSE

    After my first attempt, I wanted the second round of preparation to feel more organized. My tutor could see my reasoning and usually found the source of an error quickly. After a while, the questions started to feel much more familiar. I'm genuinely thankful to my tutor for being patient.

    Riya Ghosh

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500+ students supported|4.9/5 rating

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