A Terrified Teacher at Ghoul School! (妖怪学校の先生はじめました！) is a manga by Mai Tanaka. It began its serialization in the GFantasy manga magazine November 18, 2014. Yen Press has licensed it for release in English.
Haruaki Abe is easily terrified and would never try to scare anyone. But when he starts his job as a teacher in a school full of monstrous youkai, he finds that his students have no such qualms about scaring the living daylights out of him!