Information English school turned up (4)
I believe the answer is:
'information' is the definition.
(I know that dope is a type of details)
'english school turned up' is the wordplay.
'english' becomes 'e' (abbreviation).
'school' becomes 'pod' (I've seen this in other clues).
'turned up' says the letters should be written in reverse.
'epod' written backwards gives 'DOPE'.
(Other definitions for dope that I've seen before include "Inside information (slang)" , "Charlie" , "Marijuana - fool" , "cheat thereat?" , "Drugs for a dimwit" .)