BALTIMORE (AP) — Nearly 100 Baltimore private school students and teachers walked out of class Friday to show support for a Black teacher who resigned after posting a video describing her interaction with a white student.

Adrienne Knight, a middle school drama teacher at Bryn Mawr School, resigned earlier this year.

The resignation came after Knight posted a YouTube video exploring the racial implications of her conversation with a student who refused to clean up a mess she made and instead told Knight to “fetch” her some cleaning materials.

The school declined to address Knight’s resignation but said it supports its students for speaking up.