Like teacher, editor and social worker featured in illustration (8)
I believe the answer is:
pedantic
'like teacher' is the definition.
'editor and social worker featured in illustration' is the wordplay.
'editor' becomes 'ed'.
'and' is a charade indicator (letters next to each other).
'social worker' becomes 'ant' (I've seen this before).
'featured in' indicates putting letters inside.
'illustration' becomes 'pic' (short for picture).
'ed'+'ant'='edant'
'edant' going within 'pic' is 'PEDANTIC'.
(Other definitions for pedantic that I've seen before include "Overly concerned with minor details" , "Precise; didactic" , "Overly concerned with insignificant detail" , "Fussy about small details" , "Fussy over detail" .)