Thomas Jefferson Classical Academy: A Challenge Foundation Academy is a public charter school, offering a college-preparatory education to students in grades K–12. Building upon the foundation of the Core Knowledge Sequence, Thomas Jefferson Classical Academy: A Challenge Foundation Academy partners with families to educate students in grades K–12 in the trivium of grammar, logic, and rhetoric, thus graduating thoughtful, articulate young adults who are prepared for college and for a lifetime of citizenship and active intellectual inquiry.