Y'all need more teachers like this

Agreed, there's definitely such thing as an anxiety attack hangover too.. It literally takes it out of you for the rest of the day (or even several days)

How would you put a stop to the kids who fake an attack to go home for the day?

If it's severe enough to warrant going home for the day there's going to be visible physical symptoms. Although I suppose a clever kid could fake that too...

I think that you would be able to tell if someone was consistently faking it.. Plus with the stigma around mental health I don't think many people would want to fake it