I'm giving his teacher flowers and a $25 Visa GC and a card made by David. The TA is getting a $15 GC and I'm also getting the woman who coordinates the drop off/pick up a GC because she works her ass off every day and is the most positive, sweetest person.
Honestly, I probably wouldn't get a bunch of HS girls something. That would be a bit more than I'd want to spend, personally. Maybe your son can make them a card?