Leopold Aschenbrenner — Education: B.A. Economics and Mathematics-Statistics, Columbia University (valedictorian, 2021); attended John F. Kennedy School in Berlin

NoteThe source confirms all key elements of the claim: (1) B.A./BS in Economics and Mathematics-Statistics from Columbia University — confirmed; (2) Valedictorian, 2021 — confirmed; (3) Attended John F. Kennedy School in Berlin — confirmed; (4) Enrolled at age 15, graduated at 19 — confirmed (born 2001/2002, graduated 2021 at age 19 = enrolled ~2015 at age ~15). All facts in the claim are directly supported by the Wikipedia source text.