Founded in 1994, Science Club for Girls is a 501(c)3 nonprofit organization that addresses inequities in STEM around race, gender, and socioeconomics. With women making up less than 29% of the STEM workforce — and Black and Latina women at less than 4% — Science Club for Girls addresses a critical need, offering a continuum of engaging STEM activities for K-12 girls and gender-expansive youth, including junior mentoring and leadership experiences for high school participants, and adult mentoring and role modeling by volunteers studying STEM disciplines in higher education and working in STEM careers.