The Greater Boston STEM Program (gbSTEM) delivers free introductory computer science, math, and engineering, and science courses to elementary and middle school students. The gbSTEM spring 2023 semester will run from March 12th to June 10th, 2023 for a total of 13 weeks. Student registrations for the new semester will open soon and will be due March 4th, 2023. Instructor applications will also open soon and will be due March 2nd, 2023.

Parents and K-8 Students

High School and College Students

How it works

All sessions are free and will be conducted either remotely via Zoom or in-person in groups of about 5-10 students. Each class will meet for two 45-60 minute sessions every week. We emphasize creativity, problem-solving, and collaboration in order to foster a welcoming environment where students can form lasting friendships.

"My child came into coding without knowing what it really is. Now she is so excited about it and wants to keep doing it. Thank you gbSTEM for awakening that passion."

Parent of a 3rd grade student

"gbSTEM is an innovative program that met a need for out-of-school time enrichment for children by rallying the knowledge and skills of some truly amazing high school students."

Parent of a 2nd grade student

"Elena and Yuen Ler are passionate about and dedicated to making a difference in the community and fostering a love for math and computer science. They create curriculum to motivate students to love their classes and want to learn more."

Parent of a 3rd grade student

Our mission

We believe that everyone should have the opportunity to build strong foundational skills in computer science, math, and engineering, no matter what their background or location is.

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Courses Offered


% Volunteer Driven