My Teachers Dirty secrets BxB

Luka goes to school after his summer break ended, he's now going to grade 10. His best friend Mark has been there for Luka basically since birth, there mothers have always been close. Luka checks his schedule as Mark points to one of the classes on the list noticing something....they have a new teacher. Luka goes through the passed few months of school well, but someone interferes with him.