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

  • GMAT Focus

    Balancing GMAT Focus preparation with university and work was harder than I expected. A clear plan for the final weeks made priorities much easier to see. I started noticing the reason for a mistake much faster. A big thank you to my tutor for all the support :)

    Caitlin Underwood

  • GMAT Focus

    I had collected too many resources without knowing when to use any of them. We didn't spend extra time on things I already knew. We focused more on understanding what the problem asked than memorizing formulas. I stopped doing a huge amount one week and nothing the next. My tutor could see my reasoning and usually found the source of an error quickly. Thank you to the tutor who stayed supportive until the end.

    Duarte Esteves

  • GMAT Focus

    My mock scores were inconsistent, so it was hard to judge my actual level. Lesson times could fit around school, university or work. I started seeing shorter solutions that were easier to check under time pressure. Going back to the lesson recordings helped when I forgot a small step. My tutor could see my reasoning and usually found the source of an error quickly. I'm genuinely thankful to my tutor for being patient.

    Alessio Piras

  • GMAT Focus

    I had collected too many resources without knowing when to use any of them. I'm glad I worked with my tutor through this process.

    Maeve Hayes

  • GMAT Focus

    In Data Insights, timing was costing me more points than the content itself. Knowing what to study reduced a lot of the stress.

    Ashleigh Baird

  • GMAT Focus

    I knew my target, but I didn't have a realistic routine for GMAT Focus. My tutor usually asked me to explain my thinking before stepping in. My tutor could see my reasoning and usually found the source of an error quickly. I learned not to spend the same amount of time on every line of a long text. Knowing what to study reduced a lot of the stress. Thanks to TestPrep for helping me stay on track.

    Keira Haines

  • GMAT Focus

    My mock scores were inconsistent, so it was hard to judge my actual level. I finally understood what was going wrong in Data Insights. We could make the workload lighter during busy weeks at school or university. Learning when to leave a hard question made a real difference to my timing. I left the exam feeling that I had done what I could. A big thank you to my tutor for all the support :)

    Hyejin Pyo

  • GMAT Focus

    We didn't spend extra time on things I already knew. The feedback I received on Data Sufficiency was clear and practical. I wasn't trying to learn new topics at the very last minute. Thanks to everyone who supported me.

    Damien Girard

  • GMAT Focus

    Lesson times could fit around school, university or work. Over time, Quantitative Reasoning became one of the most organized parts of my GMAT Focus preparation. I went into the exam much calmer than I would have before. The preparation felt calmer than I expected.

    Ivana Vukovic

  • GMAT Focus

    Over time, Critical Reasoning became one of the most organized parts of my GMAT Focus preparation. Balancing Quant and Verbal in the same week worked better than studying them in blocks. My confidence improved along with the results.

    Carter Callahan

  • 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

  • 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

  • GMAT Focus

    The feedback I received on Data Sufficiency was clear and practical. After a while, the questions started to feel much more familiar.

    Serena Gallo

  • GMAT Focus

    After my first attempt, I wanted a calmer and more focused plan for the retake. Over time, Critical Reasoning became one of the most organized parts of my GMAT Focus preparation. By the end of each lesson, I knew what I was supposed to do during the week. Balancing Quant and Verbal in the same week worked better than studying them in blocks. I started noticing the reason for a mistake much faster. Thank you to my tutor and the TestPrep team.

    Spencer Sinclair

  • GMAT Focus

    I came back to Critical Reasoning after a long break and wasn't sure where to begin. My tutor usually asked me to explain my thinking before stepping in. Separating strategy mistakes from content gaps made progress much quicker. Thank you to the tutor who stayed supportive until the end.

    Tianyu Sun

  • GMAT Focus

    Balancing GMAT Focus preparation with university and work was harder than I expected. After enough examples of the same question type, the repeated mistakes decreased. Discussing why the other choices were wrong helped more than I expected. By the end of each lesson, I knew what I was supposed to do during the week. Thank you to the tutor who stayed supportive until the end.

    Alice Baxter

  • GMAT Focus

    Balancing GMAT Focus preparation with university and work was harder than I expected. Thanks to TestPrep for helping me stay on track.

    Janelle Soriano

  • GMAT Focus

    My mock scores were inconsistent, so it was hard to judge my actual level. Experiencing the exam format beforehand made test day much less stressful. I wasn't trying to learn new topics at the very last minute. Thank you to the tutor who stayed supportive until the end.

    Carlo Navarro

  • GMAT Focus

    I knew my target, but I didn't have a realistic routine for GMAT Focus. The plan changed with my mock and homework results, so the work never felt random. I used the question bank regularly to return to weaker topics. We focused more on understanding what the problem asked than memorizing formulas. My confidence improved along with the results. I'm genuinely thankful to my tutor for being patient.

    Hyunseok Pyo

  • GMAT Focus

    I came back to Quantitative Reasoning after a long break and wasn't sure where to begin. After a while, the questions started to feel much more familiar.

    Ece Ersoy

  • GMAT Focus

    I knew my target, but I didn't have a realistic routine for GMAT Focus. Breaking Reading Comprehension into smaller pieces worked much better for me. We could make the workload lighter during busy weeks at school or university. Discussing why the other choices were wrong helped more than I expected. I wasn't trying to learn new topics at the very last minute. I'm genuinely thankful to my tutor for being patient.

    Natalie Lawrence

  • GMAT Focus

    My mock scores were inconsistent, so it was hard to judge my actual level. My tutor usually asked me to explain my thinking before stepping in. During the intensive review, we returned to real gaps instead of restarting everything. Separating strategy mistakes from content gaps made progress much quicker. I became much more comfortable asking questions in class. Thank you to the tutor who stayed supportive until the end.

    Jihoon Oh

  • GMAT Focus

    I knew my target, but I didn't have a realistic routine for GMAT Focus. The plan changed with my mock and homework results, so the work never felt random. Separating strategy mistakes from content gaps made progress much quicker. The preparation felt calmer than I expected.

    Reid Ramsey

  • GMAT Focus

    Breaking Data Insights into smaller pieces worked much better for me. When I got something wrong, we looked at why I chose that answer instead of only checking the solution. A quick check after each answer helped me catch small mistakes. I wasn't trying to learn new topics at the very last minute. I went into the exam much calmer than I would have before. I was really happy with the lessons.

    Avni Malhotra

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