"Sonic Angel Knight: 2018 not a good year for many people. "
Yeah, 2018 is like the rebirth of a plain after it's been ravaged by fire (meaning many famous people died this year and now some other famous people are going to rise).
They gave him a warning. This was at nearly the end of the school year. The teacher continued working there for a few weeks, but at the next school year he wasn't there anymore. So I don't know if he left or got fired ¯\_(ツ)_/¯