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

    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

  • IGCSE / GCSE

    The group never had more than six students, so it was easy to stay involved. Breaking IGCSE Biology into smaller pieces worked much better for me. My mock results gradually became more consistent. Thank you to my tutor and the TestPrep team.

    Megan Warren

  • IGCSE / GCSE

    Keeping up with IGCSE / GCSE while school was busy was harder than I expected. We balanced current school topics with past-paper practice. My confidence improved along with the results. It was an intense period, but it was worth it.

    Toby Redfern

  • IGCSE / GCSE

    I was doing questions for IGCSE Additional Mathematics on my own but never had a steady routine. It was an intense period, but it was worth it.

    Emilia Becerra

  • IGCSE / GCSE

    I was taking IGCSE Geography at school, but getting used to the exam questions took time. One bad mock no longer made me want to drop the whole plan. Source questions became easier once I noticed how small details affected the mark. Thanks to TestPrep for helping me stay on track.

    Ignacio Tapia

  • IGCSE / GCSE

    The feedback I received on IGCSE Physics was clear and practical. My mock results gradually became more consistent.

    Antonia Caceres

  • IGCSE / GCSE

    Breaking IGCSE English as a Second Language into smaller pieces worked much better for me. Going back to the lesson recordings helped when I forgot a small step. A lot of my mistakes came from rushing through the wording of the question. I started noticing the reason for a mistake much faster. There was no overnight miracle, but the progress was easy to see. The preparation felt calmer than I expected.

    Ara Han

  • IGCSE / GCSE

    Anxiety became more visible as the exam got closer. A good connection with the tutor developed quite quickly. The plan was adjusted when school exams became busy. Being able to fit lessons around school made the process easier. Flexible scheduling helped during a demanding school year. We quickly felt that the tutor was a good match.

    Juliana Machado

  • IGCSE / GCSE

    Preparation looked calmer and more organized closer to the exam. Thank you sincerely to everyone involved.

    Linlin Xiao

  • IGCSE / GCSE

    The tutor supported regular study, not only the lesson content. We thank the tutor and the TestPrep team.

    Parker Sullivan

  • IGCSE / GCSE

    My tutor could see my reasoning and usually found the source of an error quickly. Breaking IGCSE Chemistry into smaller pieces worked much better for me. I left the exam feeling that I had done what I could. It was an intense period, but it was worth it.

    Valentin Coronel

  • IGCSE / GCSE

    Breaking IGCSE Physics into smaller pieces worked much better for me. Separating calculation errors from content gaps made revision more useful. My confidence improved along with the results.

    James Tierney

  • IGCSE / GCSE

    I wasn't starting from zero, but the same mistakes kept showing up in my mocks. My confidence improved along with the results.

    Skye OBrien

  • IGCSE / GCSE

    Over time, IGCSE Mathematics became one of the most organized parts of my IGCSE / GCSE preparation. A quick check after each answer helped me catch small mistakes. After a while, the questions started to feel much more familiar.

    Claire Maillard

  • IGCSE / GCSE

    My tutor could see my reasoning and usually found the source of an error quickly. I finally understood what was going wrong in IGCSE Physics. I left the exam feeling that I had done what I could. I'm glad I worked with my tutor through this process.

    Paolo Mendoza

  • IGCSE / GCSE

    Keeping up with IGCSE / GCSE while school was busy was harder than I expected. I left the exam feeling that I had done what I could.

    Connor Spencer

  • IGCSE / GCSE

    My tutor could see my reasoning and usually found the source of an error quickly. Breaking IGCSE Biology into smaller pieces worked much better for me. I went into the exam much calmer than I would have before. Thank you to my tutor and the TestPrep team.

    Maxime Tessier

  • IGCSE / GCSE

    After my first attempt, I wanted the second round of preparation to feel more organized. When I got something wrong, we looked at why I chose that answer instead of only checking the solution. Having the lesson move at my pace made the process feel much easier. Using the mark scheme to review my own answer was surprisingly helpful. I wasn't trying to learn new topics at the very last minute. I'm glad I worked with my tutor through this process.

    Oliver Lindley

  • IGCSE / GCSE

    My tutor could see my reasoning and usually found the source of an error quickly. The feedback I received on IGCSE Biology was clear and practical. My mock results gradually became more consistent. It was an intense period, but it was worth it.

    Liam Harrison

  • IGCSE / GCSE

    I was doing questions for IGCSE English Literature on my own but never had a steady routine. Full-length mocks helped me get used to the real exam pace. I learned not to spend the same amount of time on every line of a long text. When I got something wrong, we looked at why I chose that answer instead of only checking the solution. The mocks showed where my time was actually being lost. I'm glad I worked with my tutor through this process.

    Parker Mercer

  • IGCSE / GCSE

    As the exam got closer, I wasn't sure what I should actually review. I started tracking the type of mistake, not just the number of questions I completed. Having the lesson move at my pace made the process feel much easier. Once I understood the reasons behind the facts, the questions felt less random. I became much more comfortable asking questions in class. I'm genuinely thankful to my tutor for being patient.

    Antoine Benoit

  • IGCSE / GCSE

    I can now decide much faster when to move on from a question. I was really happy with the lessons.

    Juliana Alarcon

  • IGCSE / GCSE

    After the first attempt, we looked for a calmer plan for the retake. It was good to see confidence returning over time.

    Morgan Talbot

  • IGCSE / GCSE

    The feedback I received on IGCSE Combined Science was clear and practical. Separating calculation errors from content gaps made revision more useful. My mock results gradually became more consistent.

    Emilia Becker

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500+ students supported|4.9/5 rating

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