Aspiring Scientists Summer Internship Program (ASSIP) — George Mason University

ASSIP is an intensive mentored summer research internship at George Mason University in which interns join active research labs (wet-lab, computational or remote) across the sciences and engineering, earning undergraduate course credit. Interns work on real projects with faculty and graduate mentors and present their results. Note two caveats for your users: the program admits high-school as well as college students, and it is fee-based — a $25 application fee (waivable by need) plus tuition of ~$1,299 for 3 credits upon accepting a position.