Relatives taking a French class on art in Paris (6)
I believe the answer is:
uncles
'relatives' is the definition.
(uncle is a kind of relative)
'a french class on art in paris' is the wordplay.
'a french' becomes 'un' ('a' in French).
'class' becomes 'cl' (I've seen this in other clues).
'on' is a charade indicator (letters next to each other).
'art in paris' becomes 'es' ('thou art' in English is 'tu es' in French).
'un'+'cl'+'es'='UNCLES'
'taking' is the link.
(Other definitions for uncles that I've seen before include "Relations" , "Helper who looks after another person" , "Kinsmen" , "Older male relatives" .)