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

    I had collected too many resources without knowing when to use any of them. Breaking Verbal Reasoning into smaller pieces worked much better for me. Going back to the lesson recordings helped when I forgot a small step. My written answers became shorter, clearer and easier to follow. I became much more comfortable asking questions in class. I'm glad I worked with my tutor through this process.

    Ilse Dekker

  • GMAT Focus

    In Data Sufficiency, timing was costing me more points than the content itself. I finally understood what was going wrong in Data Sufficiency. I stopped doing a huge amount one week and nothing the next. Separating strategy mistakes from content gaps made progress much quicker. I wasn't trying to learn new topics at the very last minute. I was really happy with the lessons.

    Soren Novak

  • GMAT Focus

    A quick check after each answer helped me catch small mistakes. Thank you to my tutor and the TestPrep team.

    Kyungsoo Guk

  • GMAT Focus

    I came back to Data Sufficiency after a long break and wasn't sure where to begin. The group never had more than six students, so it was easy to stay involved. I wasn't trying to learn new topics at the very last minute. I'm genuinely thankful to my tutor for being patient.

    Khoa Ngo

  • GMAT Focus

    After my first attempt, I wanted a calmer and more focused plan for the retake. Breaking Data Insights into smaller pieces worked much better for me. One bad mock no longer made me want to drop the whole plan. I started seeing shorter solutions that were easier to check under time pressure. I wasn't trying to learn new topics at the very last minute. Thanks to everyone who supported me.

    Kiara Sanderson

  • GMAT Focus

    The feedback I received on Quantitative Reasoning was clear and practical. One bad mock no longer made me want to drop the whole plan. Learning when to leave a hard question made a real difference to my timing. My mock results gradually became more consistent. I found a better balance between regular school and exam preparation. Thank you to the tutor who stayed supportive until the end.

    Misaki Kato

  • GMAT Focus

    My mock scores were inconsistent, so it was hard to judge my actual level. Going back to the lesson recordings helped when I forgot a small step. We didn't spend extra time on things I already knew. A quick check after each answer helped me catch small mistakes. There was no overnight miracle, but the progress was easy to see. Thank you to the tutor who stayed supportive until the end.

    Diego Gomes

  • GMAT Focus

    After my first attempt, I wanted a calmer and more focused plan for the retake. Thank you to my tutor and the TestPrep team.

    Adrian Esteves

  • GMAT Focus

    With data-heavy questions, I began reading the task before getting lost in the table. I'm glad I worked with my tutor through this process.

    Volkan Akbulut

  • GMAT Focus

    After my first attempt, I wanted a calmer and more focused plan for the retake. I wasn't trying to learn new topics at the very last minute.

    Lorenzo DeLuca

  • GMAT Focus

    Balancing GMAT Focus preparation with university and work was harder than I expected. I started tracking the type of mistake, not just the number of questions I completed. Focusing on past papers and mock review worked well near the exam. Seeing several versions of the same topic made unfamiliar questions less stressful. I wasn't trying to learn new topics at the very last minute. It was an intense period, but it was worth it.

    Natsuki Harada

  • GMAT Focus

    I had been studying alone, but my results stopped improving after a point. Breaking Data Sufficiency into smaller pieces worked much better for me. My tutor made it easy to ask questions from the first lesson. Balancing Quant and Verbal in the same week worked better than studying them in blocks. My mock results gradually became more consistent. Thank you to my tutor and the TestPrep team.

    Eliza Ainsworth

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