There’s no need to dress up.
Yes, I am looking forward to the spooky season. However, we have reservations about their instructor, Miss Porting. A remark like that may swiftly damper the festive joy. An outraged kid said their instructor didn’t need to dress up for Halloween since everyone knows she’s terrible, which was the point of the conversation.
While some professors would consider such a great compliment, it’s not something most want to hear. Halloween is all about dressing up as someone else for a day. Therefore this teacher might consider dressed as a princess or an angel for the occasion.