Learned about tiered university system (7)
I believe the answer is:
erudite
'learned' is the definition.
(erudite means learned or well-read)
'tiered university system' is the wordplay.
'university' becomes 'U' (abbreviation as in UMass).
'system' indicates an anagram (another version or system with the same letters).
'tiered'+'u'='tieredu'
'tieredu' with letters rearranged gives 'ERUDITE'.
'about' is the link.
(Other definitions for erudite that I've seen before include "Highly learned" , "Possessing great learning" , "Full of knowledge" , "'Learned, knowledgeable (7)'" , "Having or showing great knowledge or learning" .)