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

    We were realistic about what could be improved in the time available. I finally understood what was going wrong in IGCSE Art and Design. My mock results gradually became more consistent. I'm genuinely thankful to my tutor for being patient.

    Tegan Connors

  • IGCSE / GCSE

    The feedback I received on IGCSE History was clear and practical. One bad mock no longer made me want to drop the whole plan. I stopped listing facts in essays and started building an actual argument. I became much more comfortable asking questions in class. Knowing what to study reduced a lot of the stress. Thanks to TestPrep for helping me stay on track.

    Valentina Cordero

  • IGCSE / GCSE

    Everyone recommended different resources and I kept switching between them. My tutor made it easy to ask questions from the first lesson. The group never had more than six students, so it was easy to stay involved. I learned not to spend the same amount of time on every line of a long text. After a while, the questions started to feel much more familiar. Thanks to everyone who supported me.

    Sofia Fontana

  • IGCSE / GCSE

    When I started preparing for IGCSE / GCSE, I wasn't sure what order to study things in. Over time, IGCSE Mathematics became one of the most organized parts of my IGCSE / GCSE preparation. I stopped doing a huge amount one week and nothing the next. We focused more on understanding what the problem asked than memorizing formulas. My confidence improved along with the results. The preparation felt calmer than I expected.

    Cristian Mena

  • IGCSE / GCSE

    I was taking IGCSE Psychology at school, but getting used to the exam questions took time. Going back to the lesson recordings helped when I forgot a small step. I stopped listing facts in essays and started building an actual argument. A big thank you to my tutor for all the support :)

    Ingrid Strand

  • IGCSE / GCSE

    The IGCSE / GCSE format felt unnecessarily confusing at first. I left the exam feeling that I had done what I could.

    Tuan Nguyen

  • IGCSE / GCSE

    After my first attempt, I wanted the second round of preparation to feel more organized. Even in a group lesson, the tutor knew where each of us stood. Predicting the output helped me catch small logic errors. I never felt awkward asking the same thing again. The class felt relaxed enough to ask questions without overthinking it. The preparation felt calmer than I expected.

    Afonso Correia

  • IGCSE / GCSE

    I chose IGCSE Chemistry this year and wanted to build a solid base from the beginning. One bad mock no longer made me want to drop the whole plan. I became much more careful with graphs, experiments and data-based questions. Thank you to my tutor and the TestPrep team.

    Nolan Vaughn

  • 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. A lot of my mistakes came from rushing through the wording of the question. My tutor usually asked me to explain my thinking before stepping in. We didn't spend extra time on things I already knew. I'm genuinely thankful to my tutor for being patient.

    Tobias Baumann

  • IGCSE / GCSE

    The feedback I received on IGCSE Geography was clear and practical. Using the mark scheme to review my own answer was surprisingly helpful. After a while, the questions started to feel much more familiar.

    Flynn Bevan

  • IGCSE / GCSE

    We weren't sure whether online lessons would be effective. The plan was adjusted when school exams became busy. Being able to fit lessons around school made the process easier. A good connection with the tutor developed quite quickly. The tutor supported regular study, not only the lesson content. The overall experience was positive from beginning to end.

    Skye Kingston

  • IGCSE / GCSE

    I stopped listing facts in essays and started building an actual argument. I'm genuinely thankful to my tutor for being patient.

    Priya Reddy

  • IGCSE / GCSE

    We didn't spend extra time on things I already knew. The feedback I received on IGCSE English as a Second Language was clear and practical. I started noticing the reason for a mistake much faster. Thank you to the tutor who stayed supportive until the end.

    Diego Santana

  • IGCSE / GCSE

    What annoyed me most was losing easy points because I rushed. After each test, we looked beyond the score and reviewed the type of each mistake. With data-heavy questions, I began reading the task before getting lost in the table. We could make the workload lighter during busy weeks at school or university. I was really happy with the lessons.

    Wouter Peeters

  • IGCSE / GCSE

    When I started preparing for IGCSE / GCSE, I wasn't sure what order to study things in. My confidence improved along with the results.

    Haruto Goto

  • IGCSE / GCSE

    I chose IGCSE English this year and wanted to build a solid base from the beginning. The plan changed with my mock and homework results, so the work never felt random. Lesson times could fit around school, university or work. Discussing why the other choices were wrong helped more than I expected. My preparation became much more regular and easier to track. I'm genuinely thankful to my tutor for being patient.

    Baran Yucel

  • IGCSE / GCSE

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

    Ana Cardoso

  • IGCSE / GCSE

    I wasn't starting from zero, but the same mistakes kept showing up in my mocks. The plan changed with my mock and homework results, so the work never felt random. Predicting the output helped me catch small logic errors. Thanks to TestPrep for helping me stay on track.

    Amelie Dupuis

  • IGCSE / GCSE

    Flexible scheduling helped during a demanding school year. Online lessons made it possible to continue without losing time on travel. We were pleased with the support we received.

    Andres Trevino

  • IGCSE / GCSE

    We noticed that the resources kept changing during independent study. Full-length tests showed how time was being used across the exam. The plan was adjusted when school exams became busy. The tutor supported regular study, not only the lesson content. The overall experience was positive from beginning to end.

    Angus Aldridge

  • IGCSE / GCSE

    I was close to my target, but my results changed a lot from one test to the next. Experiencing the exam format beforehand made test day much less stressful. I learned to separate the information needed for a decision from the extra detail. My tutor made it easy to ask questions from the first lesson. A big thank you to my tutor for all the support :)

    Angus Goodall

  • IGCSE / GCSE

    Keeping up with IGCSE / GCSE while school was busy was harder than I expected. I never felt awkward asking the same thing again. Seeing several versions of the same topic made unfamiliar questions less stressful. I'm genuinely thankful to my tutor for being patient.

    Camila Arellano

  • IGCSE / GCSE

    The group never had more than six students, so it was easy to stay involved. I finally understood what was going wrong in IGCSE Art and Design. Knowing what to study reduced a lot of the stress. I'm glad I worked with my tutor through this process.

    Loic Meunier

  • IGCSE / GCSE

    Breaking IGCSE Business Studies into smaller pieces worked much better for me. I started tracking the type of mistake, not just the number of questions I completed. Separating strategy mistakes from content gaps made progress much quicker. My mock results gradually became more consistent. Knowing what to study reduced a lot of the stress. I'm genuinely thankful to my tutor for being patient.

    Bjorn Lewandowski

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500+ students supported|4.9/5 rating

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