Spread out and have fun after end of class (5)
I believe the answer is:
splay
'spread out' is the definition.
(splaying is a kind of spreading out)
'have fun after end of class' is the wordplay.
'have fun' becomes 'play' (I've seen this in another clue).
'after' says to put letters next to each other.
'end of' indicates one should take the final letters.
The last letter of 'class' is 's'.
'play' put after 's' is 'SPLAY'.
'and' is the link.
(Other definitions for splay that I've seen before include "Widely spread" , "Slope" , "Spread apart" , "Spread outwards" .)