GloRilla's amazing year didn't prevent her from giving back to her roots ... the "TGIF" rapper surprised students at her old high school in Memphis Wednesday afternoon -- with a chunky check for $25,000!!!
The 5-figure donation will benefit the school's new library space, giving both Melrose High students and the neighboring Orange Mound community access to the new tech.
Melrose High repaid the favor by renaming its library The Gloria H. Woods Media Center, uncharted territory for Glo's old stomping grounds.