St. Aloysius Gonzaga Secondary School was established in 2001 as a holding school in Georgetown.  The new school was built at 2800 Erin Centre Boulevard and was opened and blessed in 2001.

It is part of Erin Meadows Multi-use Complex, a partnership between the City of Mississauga, the Mississauga Library System, and the board.  The advanced-concept building includes a substantial library and a community centre complete with a swimming pool.  Students can access the community library and can use the community centre facilities as part of their program.

Gonzaga, which has over 1700 students, has a significant number of programs that accommodate diverse student needs.  Programs available at Gonzaga are the ASD (Autism Spectrum Disorder) program, SHSM (Speciality High Skills Major)-Business or Environmental, and Extended French program for selected students across the board.

The school is across the street from Merciful Redeemer Parish so students can attend Mass at the church.  Some school retreats are held at the parish, and students are involved in many parish ministries and the parish’s Life Teen program