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

    When I started preparing for IB Diploma, I wasn't sure what order to study things in. One bad mock no longer made me want to drop the whole plan. Practicing in the real exam format made test day feel much less unfamiliar. Thanks to TestPrep for helping me stay on track.

    Jade Lawson

  • IB Diploma

    I was taking IB Mathematics AI at school, but getting used to the exam questions took time. I finally understood what was going wrong in IB Mathematics AI. I stopped doing a huge amount one week and nothing the next. I started seeing shorter solutions that were easier to check under time pressure. I left the exam feeling that I had done what I could. Thank you to my tutor and the TestPrep team.

    Fajar Susanto

  • IB Diploma

    I chose IB Visual Arts this year and wanted to build a solid base from the beginning. A big thank you to my tutor for all the support :)

    Zuzana Lund

  • IB Diploma

    I was close to my target, but my results changed a lot from one test to the next. Lesson times could fit around school, university or work. Once I understood the reasons behind the facts, the questions felt less random. My tutor made it easy to ask questions from the first lesson. My tutor could see my reasoning and usually found the source of an error quickly. It was an intense period, but it was worth it.

    Milena Mazur

  • IB Diploma

    Lesson times could fit around school, university or work. Breaking IB Mathematics AI into smaller pieces worked much better for me. My preparation became much more regular and easier to track. Thanks to TestPrep for helping me stay on track.

    Rafaela Ramos

  • IB Diploma

    We wanted our child to keep up with the school pace in IB Physics. Individual lesson time was used around our child's actual needs. We quickly felt that the tutor was a good match.

    Declan Daley

  • IB Diploma

    We didn't spend extra time on things I already knew. The feedback I received on IB Computer Science was clear and practical. There was no overnight miracle, but the progress was easy to see. The preparation felt calmer than I expected.

    Isha Gowda

  • IB Diploma

    Having the lesson move at my pace made the process feel much easier. The feedback I received on IB Global Politics was clear and practical. I became much more comfortable asking questions in class. I'm glad I worked with my tutor through this process.

    Tsubasa Nakajima

  • IB Diploma

    After the first attempt, we looked for a calmer plan for the retake. Online lessons made it possible to continue without losing time on travel. We were happy with both the teaching and the communication.

    Adrian Baptista

  • IB Diploma

    After the first attempt, we looked for a calmer plan for the retake. Individual lesson time was used around our child's actual needs. Joining lessons willingly was one of the clearest signs for us. The lessons started being followed without constant reminders from us. The overall experience was positive from beginning to end.

    Lukas Dijkstra

  • IB Diploma

    I finally understood what was going wrong in IB Mathematics AI. I left the exam feeling that I had done what I could.

    Avni Bedi

  • IB Diploma

    What annoyed me most was losing easy points because I rushed. We were realistic about what could be improved in the time available. Source questions became easier once I noticed how small details affected the mark. My tutor made it easy to ask questions from the first lesson. A clear plan for the final weeks made priorities much easier to see. It was an intense period, but it was worth it.

    Takumi Yamamoto

  • IB Diploma

    What annoyed me most was losing easy points because I rushed. I'm glad I worked with my tutor through this process.

    Dimas Saputra

  • IB Diploma

    What annoyed me most was losing easy points because I rushed. Thank you to the tutor who stayed supportive until the end.

    Indah Wibowo

  • IB Diploma

    What annoyed me most was losing easy points because I rushed. School assignments and internal exam dates were included in the schedule. My mock results gradually became more consistent. Thank you to the tutor who stayed supportive until the end.

    Radhika Tandon

  • IB Diploma

    Our son's school schedule was already very busy. Online lessons made it possible to continue without losing time on travel. We were pleased with the support we received.

    Andrea Quezada

  • IB Diploma

    Over time, IB Philosophy became one of the most organized parts of my IB Diploma preparation. I stopped listing facts in essays and started building an actual argument. I became much more comfortable asking questions in class.

    Ashleigh Wylie

  • IB Diploma

    The IB Diploma format felt unnecessarily confusing at first. I'm genuinely thankful to my tutor for being patient.

    Catalina Tellez

  • IB Diploma

    When I started preparing for IB Diploma, I wasn't sure what order to study things in. Near the exam, it was clear what to keep doing and what to stop. Lesson times could fit around school, university or work. A quick check after each answer helped me catch small mistakes. I went into the exam much calmer than I would have before. Thanks to TestPrep for helping me stay on track.

    Greta Thiele

  • IB Diploma

    The feedback I received on IB World History was clear and practical. Going back to the lesson recordings helped when I forgot a small step. 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 started noticing the reason for a mistake much faster. A big thank you to my tutor for all the support :)

    Janna Visser

  • IB Diploma

    Our son's school schedule was already very busy. A good connection with the tutor developed quite quickly. Being able to fit lessons around school made the process easier. Joining lessons willingly was one of the clearest signs for us. Flexible scheduling helped during a demanding school year. We would recommend the program to students and families in a similar situation.

    Declan Kavanagh

  • IB Diploma

    Even in a group lesson, the tutor knew where each of us stood. Breaking IB Business Management into smaller pieces worked much better for me. I started noticing the reason for a mistake much faster. Thank you to the tutor who stayed supportive until the end.

    Ebba Dudek

  • IB Diploma

    Our child had a clear goal but no steady study routine. The overall experience was positive from beginning to end.

    Lara Callaghan

  • IB Diploma

    What annoyed me most was losing easy points because I rushed. My tutor made it easy to ask questions from the first lesson. Focusing on past papers and mock review worked well near the exam. Connecting examples back to the main point made my writing more consistent. There was no overnight miracle, but the progress was easy to see. Thanks to everyone who supported me.

    Minho Yang

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500+ students supported|4.9/5 rating

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