Moreover, the nature of grants themselves has changed. The growing prominence of merit aid among many institutions, coupled with broader definitions of who qualifies for financial aid in such a costly market, has meant that by 2000 middle-income and wealthy students typically received bigger grants from their colleges than their low-income counterparts did.
Q : I think "coupled with....market" modifies "growing" as an adverb. What do you think?
All the best,