Sch. with a satellite campus in Calexico

SDSU

This university in San Diego is known for its strong research programs and shares its name with a famous college football team called the Aztecs.

This clue refers to San Diego State University, often abbreviated as SDSU. The "Sch." is short for "school," and the mention of a satellite campus in Calexico points to SDSU Imperial Valley, which is located in that city near the U.S.-Mexico border. The abbreviation is a common way crosswords save space for longer names.