A nonprofit for curious hands

Every girl deserves a hands-on STEM moment.

MS. stem runs free, volunteer-led, hands-on STEM workshops for middle school girls — girl-only, mentor-led, and designed to reach classrooms and community centers around the world. MS. stem Nonprofit Organization is fiscally sponsored by The Hack Foundation (d.b.a. Hack Club), a 501(c)(3) nonprofit (EIN: 81-2908499)

Start a chapter See how it works

first circuit!

CircuitsRoboticsChemistryCodingBridgesSolar OvensWater FiltersCircuitsRoboticsChemistryCodingBridgesSolar OvensWater Filters

Our mission

"Making hands-on STEM experiences accessible to middle school girls around the world."

— that's the whole plan, and we mean every word of it.

What we run

Free workshops, and everything a new chapter needs to start one.

After-School Workshops

Free, once-a-month, mentor-led sessions run by high school girls with local partner schools and community centers, girl-only by design.

Workshop Activity Plans

A detailed library of workshop ideas for chapter heads — each one with step-by-step instructions and the "why" behind it, so a brand-new chapter can run a great session on day one.

I want to start a chapter →

Why hands-on matters

Reading about a circuit and building one are not the same lesson.

100%

free — every workshop is offered at no cost to the girls or their schools

Ages 11–14

the exact window where girls' confidence in STEM starts to drift — so it's our whole focus

Girl-led

every workshop is led by high school girls passionate about pursuing and promoting STEM

Volunteer-run

every chapter is opened and led by local volunteers, using our free workshop activity plans and training

Around the world

Wherever there's a table, we can set up a workshop.

Active chapters Launching this year Volunteer inquiry open

Join in

Two ways to put a tool in a girl's hands.

Start a chapter

Bring free MS. stem workshops to your school, town, or country. We hand you curriculum, activity guides, and a mentor network — you bring the room and the girls.

Apply to open a chapter

Fund a workshop

Every dollar covers real materials for a workshop that stays free for every girl who shows up.

Donate