We've always stopped the xmas gifts for teachers thing after primary school because there are so many teachers, because DS says it's embarrassing and because the class tutor only spends about 20 minutes a day with them.
AIBU not to send in a gift for the class tutor?
About the only thing we do for them is little things like £10 to buy a coffee when a pair of teachers were giving up their Saturday to take a group to an event and emails to the head teacher when a teacher has gone above and beyond.