Free SAT Math Practice Test. Take it on paper, score it online, and get a skill report for every question you miss.
What Learning the Why Looks Like
Most tutoring teaches students how to get an answer. We start with why it works — because understanding is what students carry into the next unit, the AP exam, and beyond.
Students who understand why can reason through problems they’ve never seen — and explain their thinking, which is exactly what AP free-response questions ask for.
2026
AP Exam Results
As Important as Grades
Grades come first. But we also want to give students something that lasts much longer.
“College is a tool for living, never the destination. … I want to give my students what they will need long after the acceptance letter. Three things, above all: consistency, the ability to truly understand, and confidence.”
Chi Young Ji, Director · IC Math & Science
- ConsistencyIn a week, nothing seems to change. In a year, or five, or ten, the gap becomes impossible to close.
- Knowing how to understandA person who knows how to understand can learn anything.
- ConfidenceNot vanity, but confidence that has been earned.
Two Ways to Learn
Learn ahead of school, or keep up with the course your child is taking now. We decide together during the consultation which one fits your child.
Small groups
Up to 6 students
One-on-one
Taught by our experienced teachers
Location
Fullerton center or live on Zoom
Missed a class?
Make it up with the Zoom recording
Progress reports
A monthly report for every student
Where our students learn
Families in 15 States and Canada Learn with Us
Students learn with us in person in Fullerton or live on Zoom. More than 40% join on Zoom, from nearby cities to other states and Canada.
Fullerton centerBay Area 2 · San Diego 2
Students by state
- California120+
- Georgia5
- New York3
- Texas3
- Virginia3
- Connecticut2
- New Jersey2
- Washington2
- Florida1
- Hawaii1
- Idaho1
- Illinois1
- Nevada1
- Pennsylvania1
- Utah1
Also learning with us from
Canada 1
Our Teachers
From Ph.D. scientists to a current AP teacher, our teachers know their subjects deeply. More than 70% hold a master’s degree or higher.
Chi Young Ji
Director · AP Biology, AP Chemistry, SAT Math · 20+ years of teaching · B.S. in Biochemistry, UCLA · M.A. in Education, Biola University
Insung Whang
Director of Math · All math through AP Calculus BC · 13+ years of teaching · Math instructor at Cal State Fullerton · M.A. in Mathematics
Dr. Patrick Rhee
AP Chemistry, AP Physics, AMC/AIME · 17+ years of teaching · Ph.D. in Chemical Engineering, University of Michigan · B.S., Seoul National University
Dr. Yuzo Ishikawa
AP Physics 1, 2 & C, math through AP Calculus BC · 5+ years of teaching · Ph.D. in Astronomy and Astrophysics, Johns Hopkins
Kacey Jeffcoat
AP Biology, AP Environmental Science · 14+ years of teaching · Current high school AP teacher and official AP scorer
Leon Kim
AP Physics, AP CS Principles, math through AP Calculus BC · 14+ years of teaching · M.S. in Mathematics, Cal State Long Beach
What Families Say
Where Our Students Go
From First Call to First Class
It’s simple. Three steps are all it takes.
From the ICMS Faculty
Faculty-driven articles on conceptual learning, exam strategy, and long-term academic success.
Frequently Asked Questions
Have another question? Ask us anything during your free consultation.
Do you follow the school curriculum or your own?
It depends on the goal. Preview Classes follow the ICMS curriculum. If the goal is school grades, we follow your child’s school curriculum closely, including the syllabus, homework, and test dates.
Is there homework?
Students in Preview Classes, and those who need extra practice, get homework. Students in 10th grade and up, who are already busy, and students in AP courses don’t get separate homework. Instead, we give them personalized practice problems to work through before tests and quizzes.
How do you place students in a class?
For math, we always start with an assessment so we know exactly where your child is, then place them in the right class. Parents are welcome to sit in on the first math assessment, and the free consultation includes a 30-minute diagnostic.
Do the directors teach classes themselves?
Yes. Both directors teach group classes. One-on-one lessons are taught by our other teachers, and the directors oversee every class and handle all communication with parents.
Can my child try a class before enrolling?
Yes. Your child can take a trial class before you decide to enroll.
Can my child switch classes later?
Of course. If a different class or level fits your child better, they can switch at any point during the term.
Is there a minimum commitment?
No. Tuition is usually billed monthly, and you can stop anytime. If you do, we refund the remaining classes in full.
How many students are in a class?
Group classes have up to 6 students. One-on-one lessons are also available and are taught by our teachers other than the directors.
What if my child misses a class?
Missed group classes can be made up with the Zoom recording. We’ll explain the details when you enroll.
Can we join if we don’t live near Fullerton?
Yes. Students join classes from our Fullerton center live on Zoom. Right now, students from Hawaii to New York, across 15 states and Canada, learn with us.
Is the consultation available in Korean?
Yes. Consultations are available in English or Korean. Fill out the form, and a director will contact you within one business day.
What happens after the consultation?
A free 30-minute diagnostic shows where your child is, and we recommend the right class and level. There’s no obligation to enroll.
How much is tuition?
We’ll walk you through tuition during the consultation, based on the subject and class type.
How do you keep parents informed?
The directors handle all communication with parents. Every month, you’ll receive a report on your child’s progress and the plan for the next month.
Free Consultation
Let’s Find the Right Class for Your Child
Send us a short form, and a director will call you within one business day. We’re happy to talk about classes in Fullerton or on Zoom.
- LanguagesEnglish · Korean
- HoursMon–Fri 3–9 PM · Sat 9 AM–7 PM (Pacific)
- Center2009 W Commonwealth Ave, Suite E, Fullerton, CA 92833 · Get directions →
Prefer the phone? You’re welcome to call a director directly.
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