Some educate aching to inform (5)
I believe the answer is:
teach
'inform' is the definition.
(teaching is a kind of informing)
'some educate aching to' is the wordplay.
'some' indicates a hidden word (some of the parts of the word are used).
'TEACH' is hidden in the letters of 'educate aching to'.
(Other definitions for teach that I've seen before include "Tutor" , "Blackbeard" , "Work in school" , "Cheat (anag)" , "Pass on knowledge" .)