Regarding late or missed assignments, It is important to remain consistent with students. The same penalties should apply to entire class and even an entire school. Students discuss things at break or after class, some start friendships etc. It is important that the students know and understand that the same rules apply to everyone, young or old, new student or experienced student. Not being consistent will only create problems, and a lack of trust from your students. Firm yet fair is my motto concerning late or missed assignments. Students know when you let another student get away with something, they tend to brag about it.