Schoolhouse.world: peer tutoring, for free.
Schoolhouse.world: peer tutoring, for free.
Schoolhouse.world: peer tutoring, for free.

Jiyun L

Tutor

Joined Jan 2026 · He/Him · 4:35 AM Local

About

Hi! I am the most GOATed high school junior, and I am here to tutor for calculus, SAT Math, biology, and computer science. I am especially interested in computational biology, and I have 1 cancer biochemistry research paper published. I also enjoy math a lot, and I am currently taking multivariable calculus. I also enjoy competitive programming, and I am currently qualified for USACO gold.

Tutor

Jan 2026 - Present

United States of America

Stats

417

SP

8

Badges

4

Countries Reached

20

Learners Impacted

22

Sessions Hosted

1,159

Tutoring Minutes

Certifications

SAT® Prep
Honorary
SAT Reading & Writing
Honorary
SAT Math
Honorary
AP Calculus
Honorary
AP Biology
Honorary

Connections

Wendy Z
Changhoon K
Fern S
Sahasra K
Hassanat L

Upcoming Sessions

Introduction to Java

    2nd session

This course provides a comprehensive introduction to Java programming for students with no prior coding experience. Designed as a bridge to AP Computer Science A, the course covers most major AP CSA topics while emphasizing conceptual understanding, problem-solving, and clear program design. Students will begin with the fundamentals of how Java programs work, including variables, data types, expressions, and control flow. The course then progresses through conditionals and loops, method design and decomposition, object-oriented programming with classes and constructors, and an introduction to data collections such as arrays and ArrayLists. Students will also be exposed to standard algorithms, basic runtime reasoning, recursion at an introductory level, and ethical considerations related to data and computing. By the end of the course, students will be able to read, write, and reason about Java programs using the core structures and ideas required for further study in AP Computer Science A or other introductory computer science courses. No previous programming experience is required.

Jiyun L

21/30

Featured Feedback

7

Cool

Learner · 5 days ago

I loved it! This class will definitely benefit me in AP CSA!

Learner · 10 days ago

Thank you for today's session! I learned a lot, and will now no some basics.

Learner · 10 days ago

Jiyun is friendly and a good teacher.

Learner · 10 days ago

Badges

  • New Kid in Class

    Attend 1 session

  • Show Your Stuff

    Get 1 certification

  • Thinker

    Get 5 certifications

  • Whiz Kid

    Get 10 certifications

  • Red Delicious

    Host 1 session

  • Granny Smith

    Host 5 sessions

  • Honeycrisp

    Host 10 sessions

  • Welcome to Schoolhouse

    Approved to Join

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