It's foolish of them to cut classes (5)
I believe the answer is:
asses
'it's foolish of them' is the definition.
I can't judge whether this definition defines the answer.
'cut classes' is the wordplay.
'ASSES' is hidden within the letters.
However, I am not sure how this is indicated.
'to' acts as a link.
Can you help me to learn more?
(Other definitions for asses that I've seen before include "Pompous fools" , "Idiots" , "Hardy and sure-footed animals" , "Stupid people; Roman coins" , "Small, sure-footed animals" .)