The college one attended (lower case); “Alma Mater” (upper case, in quotes) is the song.
Feminine singular noun for a graduate of the institution.
Feminine plural noun for graduates.
Masculine (or mixed masculine and feminine) plural noun. One graduate is an alumnus (masculine) or an alumna (feminine).
Note: Students who graduate from the Augusta University/University of Georgia Medical Partnership earn an M.D. (doctor of medicine) from Augusta University.
Masculine singular. Feminine singular form is alumna. Plural forms are alumni (masculine, or both masculine and feminine) and alumnae (feminine).