Absolutely.
This post is a few years old now, but this section applied then and havent heard of anything different:
"Under a joint-use agreement between the City of Brandon and Brandon School Division, playgrounds on school property are available for community use during off-school hours. Specifically during the school year that would be 6pm-11pm on weekdays and 8am-11pm on weekends."
https://ebrandon.ca/buzzpost.aspx?buzz_id=390