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

    What annoyed me most was losing easy points because I rushed. 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. Thanks to everyone who supported me.

    Agustin Quezada

  • IB Diploma

    Once I understood the reasons behind the facts, the questions felt less random. I was really happy with the lessons.

    Caleb Hawkins

  • IB Diploma

    Keeping up with IB Diploma while school was busy was harder than I expected. Going back to the lesson recordings helped when I forgot a small step. A quick check after each answer helped me catch small mistakes. Thank you to my tutor and the TestPrep team.

    Jules Girard

  • IB Diploma

    The feedback I received on IB Global Politics was clear and practical. Using the mark scheme to review my own answer was surprisingly helpful. I started noticing the reason for a mistake much faster.

    Lucie Fontaine

  • IB Diploma

    The IB Diploma format felt unnecessarily confusing at first. Lesson times could fit around school, university or work. Source questions became easier once I noticed how small details affected the mark. I never felt awkward asking the same thing again. We didn't spend extra time on things I already knew. It was an intense period, but it was worth it.

    Petra Solberg

  • IB Diploma

    Once I understood the reasons behind the facts, the questions felt less random. Thank you to my tutor and the TestPrep team.

    Derya Bozkurt

  • IB Diploma

    I chose IB World History this year and wanted to build a solid base from the beginning. Keeping school units and exam preparation in the same plan worked really well. I went into the exam much calmer than I would have before. The preparation felt calmer than I expected.

    Kenta Maeda

  • IB Diploma

    I wasn't starting from zero, but the same mistakes kept showing up in my mocks. Working across different difficulty levels made new questions feel less surprising. A quick check after each answer helped me catch small mistakes. My tutor made it easy to ask questions from the first lesson. After enough examples of the same question type, the repeated mistakes decreased. The preparation felt calmer than I expected.

    Pippa Ritchie

  • IB Diploma

    Focusing on past papers and mock review worked well near the exam. Over time, Internal Assessment (IA) became one of the most organized parts of my IB Diploma preparation. Knowing what to study reduced a lot of the stress. I'm glad I worked with my tutor through this process.

    Rasmus Ahlberg

  • IB Diploma

    Over time, IB Business Management became one of the most organized parts of my IB Diploma preparation. With data-heavy questions, I began reading the task before getting lost in the table. I started noticing the reason for a mistake much faster.

    Chloe Atkins

  • IB Diploma

    When I started preparing for IB Diploma, I wasn't sure what order to study things in. The group never had more than six students, so it was easy to stay involved. A lot of my mistakes came from rushing through the wording of the question. I stopped doing a huge amount one week and nothing the next. The class felt relaxed enough to ask questions without overthinking it. Thanks to everyone who supported me.

    Jisoo Moon

  • IB Diploma

    The IB Diploma format felt unnecessarily confusing at first. My tutor made it easy to ask questions from the first lesson. We balanced current school topics with past-paper practice. I learned to make a short plan before starting a long response. There was no overnight miracle, but the progress was easy to see. The preparation felt calmer than I expected.

    Lachlan Menzies

  • IB Diploma

    Our son's school schedule was already very busy. The tutor's close attention to weaker areas gave us confidence. The overall experience was positive from beginning to end.

    Lijuan Wu

  • IB Diploma

    Having the lesson move at my pace made the process feel much easier. I finally understood what was going wrong in IB Philosophy. My confidence improved along with the results. The preparation felt calmer than I expected.

    Bianca Martins

  • IB Diploma

    After the first attempt, we looked for a calmer plan for the retake. Mistakes became something to work on rather than something to feel bad about. Online lessons made it possible to continue without losing time on travel. Individual lesson time was used around our child's actual needs. We were able to follow the mock results regularly. Thank you sincerely to everyone involved.

    Xinyi Ma

  • IB Diploma

    After each test, we looked beyond the score and reviewed the type of each mistake. I finally understood what was going wrong in IB Visual Arts. After a while, the questions started to feel much more familiar. The preparation felt calmer than I expected.

    Yui Ono

  • IB Diploma

    Using the mark scheme to review my own answer was surprisingly helpful. Thanks to TestPrep for helping me stay on track.

    Wenjing Yang

  • IB Diploma

    I was taking IB Psychology at school, but getting used to the exam questions took time. I was really happy with the lessons.

    Karina Madsen

  • IB Diploma

    As the exam got closer, I wasn't sure what I should actually review. The feedback I received on IB Visual Arts was clear and practical. The plan changed with my mock and homework results, so the work never felt random. Splitting time between research, making and editing kept the work manageable. My mock results gradually became more consistent. Thanks to everyone who supported me.

    Hayden Sutherland

  • IB Diploma

    What annoyed me most was losing easy points because I rushed. I stopped doing a huge amount one week and nothing the next. Having the lesson move at my pace made the process feel much easier. Reviewing my work against the criteria changed the way I edited it. I found a better balance between regular school and exam preparation. I was really happy with the lessons.

    Bruno Cardenas

  • IB Diploma

    What annoyed me most was losing easy points because I rushed. Over time, IB Chemistry became one of the most organized parts of my IB Diploma preparation. Near the exam, it was clear what to keep doing and what to stop. Past-paper questions showed me how different topics could appear together. Knowing what to study reduced a lot of the stress. It was an intense period, but it was worth it.

    Kennedy Townsend

  • IB Diploma

    Our child wasn't sure how to organize the preparation for IB Diploma. The lessons started being followed without constant reminders from us.

    Tomas Solis

  • IB Diploma

    I learned not to spend the same amount of time on every line of a long text. Thanks to TestPrep for helping me stay on track.

    Catarina Barros

  • IB Diploma

    Breaking IB World History into smaller pieces worked much better for me. I stopped listing facts in essays and started building an actual argument. I found a better balance between regular school and exam preparation.

    Nikola Nygard

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