cocurricular

[koh-kuh-rik-yuh-ler]
adjective Education.
  1. related but only complementary to the official curriculum, as a civic or service activity outside the classroom.

Origin of cocurricular

First recorded in 1945–50; co- + curricular
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018