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

    When I started preparing for IGCSE / GCSE, I wasn't sure what order to study things in. We could make the workload lighter during busy weeks at school or university. I started seeing shorter solutions that were easier to check under time pressure. The preparation felt calmer than I expected.

    Marine Gerard

  • IGCSE / GCSE

    I was doing questions for IGCSE Physics on my own but never had a steady routine. After enough examples of the same question type, the repeated mistakes decreased. My confidence improved along with the results. It was an intense period, but it was worth it.

    Tahlia Hume

  • IGCSE / GCSE

    Our son's school schedule was already very busy. We were able to follow the mock results regularly. Joining lessons willingly was one of the clearest signs for us. Full-length tests showed how time was being used across the exam. A good connection with the tutor developed quite quickly. We would recommend the program to students and families in a similar situation.

    Callum Baird

  • IGCSE / GCSE

    Over time, IGCSE English as a Second Language became one of the most organized parts of my IGCSE / GCSE preparation. I started tracking the type of mistake, not just the number of questions I completed. I learned not to spend the same amount of time on every line of a long text. I became much more comfortable asking questions in class. I started noticing the reason for a mistake much faster. A big thank you to my tutor for all the support :)

    Ayu Maulana

  • IGCSE / GCSE

    When I started preparing for IGCSE / GCSE, I wasn't sure what order to study things in. Knowing what to study reduced a lot of the stress.

    Klara Wagner

  • IGCSE / GCSE

    Over time, IGCSE Combined Science became one of the most organized parts of my IGCSE / GCSE preparation. Knowing the topic wasn't always enough; I had to learn which information the question actually needed. My confidence improved along with the results.

    Jisung Moon

  • IGCSE / GCSE

    When I started preparing for IGCSE / GCSE, I wasn't sure what order to study things in. When I got something wrong, we looked at why I chose that answer instead of only checking the solution. Timed work showed exactly which section was slowing me down. Thanks to TestPrep for helping me stay on track.

    Stefan Stanic

  • IGCSE / GCSE

    The lessons started being followed without constant reminders from us. Online lessons made it possible to continue without losing time on travel. We were pleased with the support we received.

    Miguel Villanueva

  • IGCSE / GCSE

    Past-paper questions showed me how different topics could appear together. The preparation felt calmer than I expected.

    Kaito Ishii

  • IGCSE / GCSE

    I wasn't starting from zero, but the same mistakes kept showing up in my mocks. I wasn't trying to learn new topics at the very last minute.

    Alice Caldwell

  • IGCSE / GCSE

    Keeping up with IGCSE / GCSE while school was busy was harder than I expected. I was really happy with the lessons.

    Maelle Girard

  • 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 became much more comfortable asking questions in class. Thanks to everyone who supported me.

    Aylin Kurt

  • IGCSE / GCSE

    At the beginning, we knew very little about the IGCSE / GCSE system as parents. Flexible scheduling helped during a demanding school year.

    Imogen Tarrant

  • IGCSE / GCSE

    I started seeing shorter solutions that were easier to check under time pressure. Thank you to my tutor and the TestPrep team.

    Samuel Burke

  • IGCSE / GCSE

    Breaking IGCSE English as a Second Language into smaller pieces worked much better for me. A lot of my mistakes came from rushing through the wording of the question. My preparation became much more regular and easier to track.

    Elisa Fiore

  • IGCSE / GCSE

    I chose IGCSE Mathematics this year and wanted to build a solid base from the beginning. Breaking IGCSE Mathematics into smaller pieces worked much better for me. The plan changed with my mock and homework results, so the work never felt random. Seeing several versions of the same topic made unfamiliar questions less stressful. After a while, the questions started to feel much more familiar. I'm genuinely thankful to my tutor for being patient.

    Priscila Correia

  • IGCSE / GCSE

    Our child had a clear goal but no steady study routine. We thank the tutor and the TestPrep team.

    Jun Guo

  • IGCSE / GCSE

    Our daughter needed regular support with IGCSE English Literature. The tutor's close attention to weaker areas gave us confidence. The overall experience was positive from beginning to end.

    Damla Akbulut

  • IGCSE / GCSE

    The feedback I received on IGCSE Art and Design was clear and practical. The feedback was clear enough that I always knew what to revise next. I found a better balance between regular school and exam preparation.

    Federico Fontana

  • IGCSE / GCSE

    Breaking IGCSE Computer Science into smaller pieces worked much better for me. My written code answers became much more organized. I left the exam feeling that I had done what I could.

    Anong Lertchai

  • IGCSE / GCSE

    Over time, IGCSE Sociology became one of the most organized parts of my IGCSE / GCSE preparation. I found a better balance between regular school and exam preparation.

    Chelsea Kearney

  • IGCSE / GCSE

    I finally understood what was going wrong in IGCSE Additional Mathematics. A quick check after each answer helped me catch small mistakes. There was no overnight miracle, but the progress was easy to see.

    Jordan Tarrant

  • IGCSE / GCSE

    I wasn't starting from zero, but the same mistakes kept showing up in my mocks. My preparation became much more regular and easier to track.

    Yuna Cho

  • IGCSE / GCSE

    Practicing in the real exam format made test day feel much less unfamiliar. A big thank you to my tutor for all the support :)

    Luca Valentini

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500+ students supported|4.9/5 rating

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