Performed play, in charge like a teacher (8)
I believe the answer is:
didactic
'like a teacher' is the definition.
(I've seen this before)
'performed play in charge' is the wordplay.
'performed' becomes 'did' ('do' can be a synonym of 'perform').
'play' becomes 'act' ('act' can be a synonym of 'play').
'in charge' becomes 'ic'.
'did'+'act'+'ic'='DIDACTIC'
(Other definitions for didactic that I've seen before include "Edifying" , "Having the manner of one instructing pupils" , "Having the manner of one lecturing students" , "'Instructive, perhaps excessively so (8)'" , "Teaching morally" .)