Money gleaned from education (5)
I believe the answer is:
ducat
'money' is the definition.
(I know that ducat is a currency)
'gleaned from education' is the wordplay.
'gleaned from' indicates the answer is hidden within the clue.
'DUCAT' can be found hidden inside 'education'.
(Other definitions for ducat that I've seen before include "piece of gold" , "Cut Da out an old coin" , "Ancient coin" , "Former European gold coin" , "Old gold coin in e.g. Venice" .)