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

    The IB Diploma format felt unnecessarily confusing at first. The feedback I received on IB TITC was clear and practical. Near the exam, it was clear what to keep doing and what to stop. Practicing in the real exam format made test day feel much less unfamiliar. After a while, the questions started to feel much more familiar. Thank you to the tutor who stayed supportive until the end.

    Signe Kaczmarek

  • IB Diploma

    The plan was adjusted when school exams became busy. It was good to see confidence returning over time. We thank the tutor and the TestPrep team.

    Trisha Trivedi

  • LNAT

    I was doing questions for Section B Essay on my own but never had a steady routine. A big thank you to my tutor for all the support :)

    Ramiro Montalvo

  • A-Level

    I finally understood what was going wrong in A-Level Biology. Knowing what to study reduced a lot of the stress.

    Rafael Machado

  • IB Diploma

    Over time, IB Geography became one of the most organized parts of my IB Diploma preparation. 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. There was no overnight miracle, but the progress was easy to see. I wasn't trying to learn new topics at the very last minute. I'm genuinely thankful to my tutor for being patient.

    Romina Carvajal

  • IGCSE / GCSE

    Discussing why the other choices were wrong helped more than I expected. A big thank you to my tutor for all the support :)

    Beatrice Ferrara

  • IB Diploma

    The IB Diploma format felt unnecessarily confusing at first. My tutor made it easy to ask questions from the first lesson. Source questions became easier once I noticed how small details affected the mark. The preparation felt calmer than I expected.

    Harrison Paterson

  • IB Diploma

    I realized that choosing a topic, researching and revising each needed its own deadline. It was an intense period, but it was worth it.

    Renato Pinheiro

  • SSAT

    The feedback I received on Middle Level was clear and practical. I can now decide much faster when to move on from a question. I started noticing the reason for a mistake much faster.

    Tianyu Su

  • IB Diploma

    Breaking IB ESS into smaller pieces worked much better for me. I went into the exam much calmer than I would have before.

    Georgia Bennett

  • GMAT Focus

    My mock scores were inconsistent, so it was hard to judge my actual level. We could make the workload lighter during busy weeks at school or university. Lesson times could fit around school, university or work. My written answers became shorter, clearer and easier to follow. I started noticing the reason for a mistake much faster. I'm genuinely thankful to my tutor for being patient.

    Phoebe Murray

  • IMAT

    I finally understood what was going wrong in Chemistry. There was no overnight miracle, but the progress was easy to see.

    Louis Picard

  • IMAT

    After my first attempt, I wanted the second round of preparation to feel more organized. A big thank you to my tutor for all the support :)

    Sienna Rawson

  • A-Level

    Joining lessons willingly was one of the clearest signs for us. We were happy with both the teaching and the communication.

    Gustavo Rezende

  • Digital SAT

    Anxiety became more visible as the exam got closer. Being able to fit lessons around school made the process easier. We quickly felt that the tutor was a good match.

    Luca Greco

  • GMAT Focus

    I came back to Reading Comprehension after a long break and wasn't sure where to begin. I started tracking the type of mistake, not just the number of questions I completed. Discussing why the other choices were wrong helped more than I expected. Thank you to the tutor who stayed supportive until the end.

    Camila Monteiro

  • ACT

    Flexible scheduling helped during a demanding school year. A good connection with the tutor developed quite quickly. The overall experience was positive from beginning to end.

    Gaia Donati

  • GRE General

    After my first attempt, I wanted a calmer and more focused plan for the retake. I became much more comfortable asking questions in class.

    Nari Heo

  • IB Diploma

    I was doing questions for IB Economics on my own but never had a steady routine. Over time, IB Economics became one of the most organized parts of my IB Diploma preparation. My tutor made it easy to ask questions from the first lesson. My case responses became more organized and direct. I started noticing the reason for a mistake much faster. It was an intense period, but it was worth it.

    Daniela Ponce

  • IB Diploma

    When I started preparing for IB Diploma, I wasn't sure what order to study things in. After a while, the questions started to feel much more familiar.

    Mitchell Newell

  • SSAT

    I wasn't starting from zero, but the same mistakes kept showing up in my mocks. Having the lesson move at my pace made the process feel much easier. I learned not to spend the same amount of time on every line of a long text. Near the exam, it was clear what to keep doing and what to stop. Lesson times could fit around school, university or work. It was an intense period, but it was worth it.

    Xiaoyu Xie

  • IGCSE / GCSE

    Our son's school schedule was already very busy. Online lessons made it possible to continue without losing time on travel. We were able to follow the mock results regularly. Regular mocks built familiarity with the real exam pace. The lessons started being followed without constant reminders from us. We quickly felt that the tutor was a good match.

    Jade Templeton

  • AP Exams

    I was taking AP Calculus AB at school, but getting used to the exam questions took time. A big thank you to my tutor for all the support :)

    Gabriela Reinoso

  • ACT

    After my first attempt, I wanted the second round of preparation to feel more organized. The feedback I received on Optional Writing was clear and practical. When I got something wrong, we looked at why I chose that answer instead of only checking the solution. I learned not to spend the same amount of time on every line of a long text. I found a better balance between regular school and exam preparation. Thank you to my tutor and the TestPrep team.

    Yunfei Hu

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500+ students supported|4.9/5 rating

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