Since everyone here love to read about snape in trouble heres a couple
of scenes from a crossover fic where he gets caught red handed.
It's an anime addventure & Harry is not the lead or the target for
this as a drunk sorting hat put him in Hufflepuff (& resorted Percy
into Slytherin when it fell to the floor & Percy picked it up.)
after reading it go down and pick option three "Minerva and her staff
meeting" to see what happens after ward & prey that option one is
chosen for the next chapter.