Grit: The Power of Passion and Perseverance · chapter 11 · id grit-c11-05-children-who-follow-through-on

“Children who follow through on extracurricular activities develop better self-regulation, time management, and social skills that transfer to academic and professional settings.”

needs contextconfidence: medium⚠ extracted by pipeline, re-audit pending

Receipts

NCES - Extracurricular Participation and Student Engagementsource alive
Students who participate in extracurricular activities show higher engagement in school, better attendance, and higher graduation rates.
ERIC - Impact of Extracurriculars on Academic Successsource alive
Participation in extracurricular activities is positively correlated with academic outcomes, though selection effects make causal inference difficult.
Ohio State University - No need to load up on extracurricularssource alive
Participation in extracurricular activities does not have a causal effect on later success. Students who participate are already different from those who don't.

This claim is a stable, citable object. If you can falsify a verdict, tell us — corrections are loud here.