anti-educational

adjective

an·​ti-ed·​u·​ca·​tion·​al ˌan-tē-ˌe-jə-ˈkā-sh(ə-)nəl 

ˌan-tī-

: opposing or tending to hinder education

For young children, the stress of learning to pass tests may actually be anti-educational.

—Joe Savage

Word History

First Known Use

1825, in the meaning defined above