At the Enriched Learning Center for Gifted Children, Bart feels out of place among the other students with advanced academic skills. Ostracized by his brilliant classmates, Bart visits his former school, where his old friends reject him because of his perceived intelligence. After Bart's chemistry experiment explodes, filling the school lab with green goo, he confesses to Dr. Pryor that he switched tests with Martin. Dr. Pryor realizes that he was never a genius and has him readmitted to Springfield Elementary.