Tackle school producing tasteless art (6)
I believe the answer is:
kitsch
'tasteless art' is the definition.
(I've seen this before)
'tackle school' is the wordplay.
'tackle' becomes 'kit' (both can mean gear or equipment).
'school' becomes 'sch'.
'kit'+'sch'='KITSCH'
'producing' is the link.
(Other definitions for kitsch that I've seen before include "Garishly sentimental items" , "Item of pretentious bad taste" , "Vulgarly pretentious art" , "Tacky" , "Articles of dubious taste" .)