Of Middle Eastern Appearance - S9.E18

A friend of Jo's, science teacher Deniz Gulmez, is accused of hurting Rufus Sedgwick, a boy in her class. The two witnesses - Emily Larson and Jason McKendry, hate each other so it seems neither of them would be working toeghter. Even the principal, Mrs. Ellis believes them. Jo thinks this is because she is a racist bigot.