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 weren't sure whether online lessons would be effective. The lessons started being followed without constant reminders from us. Being able to fit lessons around school made the process easier. We were able to follow the mock results regularly. We quickly felt that the tutor was a good match.

    Sophie Tierney

  • SSAT

    When I started preparing for SSAT, I wasn't sure what order to study things in. Thank you to my tutor and the TestPrep team.

    Chiara Gatti

  • ACT

    The plan was adjusted when school exams became busy. Communication with the team was straightforward and our questions were answered. We were pleased with the support we received.

    Vikram Mehta

  • TOEFL iBT

    I finally understood what was going wrong in Reading. I developed a clearer way to return to the text during reading questions. I found a better balance between regular school and exam preparation.

    Aline Correia

  • IGCSE / GCSE

    We weren't sure whether online lessons would be effective. The overall experience was positive from beginning to end.

    Akari Mori

  • YÖS / TR-YÖS

    After the first attempt, we looked for a calmer plan for the retake. We thank the tutor and the TestPrep team.

    Danica Kovac

  • Digital SAT

    When I started preparing for Digital SAT, I wasn't sure what order to study things in. My preparation became much more regular and easier to track.

    Selin Aydin

  • AP Exams

    Using the mark scheme to review my own answer was surprisingly helpful. I'm glad I worked with my tutor through this process.

    Zoe Lindley

  • IGCSE / GCSE

    As the exam got closer, I wasn't sure what I should actually review. My tutor made it easy to ask questions from the first lesson. My tutor could see my reasoning and usually found the source of an error quickly. Predicting the output helped me catch small logic errors. I became much more comfortable asking questions in class. I was really happy with the lessons.

    Oscar Callaghan

  • IB Diploma

    Everyone recommended different resources and I kept switching between them. My tutor usually asked me to explain my thinking before stepping in. Having the lesson move at my pace made the process feel much easier. I can now decide much faster when to move on from a question. I wasn't trying to learn new topics at the very last minute. Thanks to everyone who supported me.

    Pablo Fidalgo

  • IB Diploma

    At the beginning, we knew very little about the IB Diploma system as parents. Regular work on similar question types reduced repeated mistakes. Joining lessons willingly was one of the clearest signs for us. Online lessons made it possible to continue without losing time on travel. We thank the tutor and the TestPrep team.

    Leticia Ribeiro

  • IGCSE / GCSE

    I wasn't starting from zero, but the same mistakes kept showing up in my mocks. My tutor usually asked me to explain my thinking before stepping in. I stopped listing facts in essays and started building an actual argument. Thank you to my tutor and the TestPrep team.

    Reina Fujita

  • A-Level

    Breaking A-Level Economics into smaller pieces worked much better for me. My tutor made it easy to ask questions from the first lesson. I learned to separate the information needed for a decision from the extra detail. I found a better balance between regular school and exam preparation. There was no overnight miracle, but the progress was easy to see. I was really happy with the lessons.

    Chai Chantarangsu

  • AP Exams

    The feedback I received on AP Psychology was clear and practical. By the end of each lesson, I knew what I was supposed to do during the week. I learned to make a short plan before starting a long response. There was no overnight miracle, but the progress was easy to see. I started noticing the reason for a mistake much faster. I'm glad I worked with my tutor through this process.

    Amanda Vieira

  • IGCSE / GCSE

    Breaking IGCSE Turkish into smaller pieces worked much better for me. My mock results gradually became more consistent.

    Shanshan Lu

  • IMAT

    Everyone recommended different resources and I kept switching between them. Knowing what to study reduced a lot of the stress.

    Thijs Kramer

  • GRE General

    Over time, Data Analysis became one of the most organized parts of my GRE General preparation. A quick check after each answer helped me catch small mistakes. My preparation became much more regular and easier to track.

    Jihye Ko

  • IGCSE / GCSE

    When I started preparing for IGCSE / GCSE, I wasn't sure what order to study things in. I finally understood what was going wrong in IGCSE History. By the end of each lesson, I knew what I was supposed to do during the week. Using the mark scheme to review my own answer was surprisingly helpful. My preparation became much more regular and easier to track. Thanks to everyone who supported me.

    Maya Setiawan

  • A-Level

    Even in a group lesson, the tutor knew where each of us stood. Over time, A-Level Biology became one of the most organized parts of my A-Level preparation. I went into the exam much calmer than I would have before. Thanks to TestPrep for helping me stay on track.

    Cooper Fletcher

  • ACT

    Over time, ACT English became one of the most organized parts of my ACT preparation. Near the exam, it was clear what to keep doing and what to stop. My written answers became shorter, clearer and easier to follow. I became much more comfortable asking questions in class. After a while, the questions started to feel much more familiar. I'm genuinely thankful to my tutor for being patient.

    Felipe Braga

  • AP Exams

    With data-heavy questions, I began reading the task before getting lost in the table. It was an intense period, but it was worth it.

    Joel Shepard

  • AP Exams

    Everyone recommended different resources and I kept switching between them. Lesson times could fit around school, university or work. My written answers became shorter, clearer and easier to follow. I started tracking the type of mistake, not just the number of questions I completed. I'm genuinely thankful to my tutor for being patient.

    Colin Vaughn

  • ACT

    Everyone recommended different resources and I kept switching between them. After each test, we looked beyond the score and reviewed the type of each mistake. I started noticing the reason for a mistake much faster. Thank you to the tutor who stayed supportive until the end.

    Franco Benitez

  • IELTS Academic

    After my first attempt, I wanted a calmer and more focused plan for the retake. Lesson times could fit around school, university or work. After a while, the questions started to feel much more familiar. I was really happy with the lessons.

    Autumn Harmon

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500+ students supported|4.9/5 rating

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