Plugin to create multiple calendars w/ shortcodes

Im developing a wordpress site for a daycare center and they need a separate calendar for each of their classrooms. For example, they have a “Toddlers” program, a “Pre-K” program…. etc… a total of about a dozen different programs. Each needs its own calendar. Just a simple calendar where they can list the days events for the month -on a separate calendar that goes on each of the individual programs pages…

Anyone know of a simple calendar plugin that can be implemented with “multiple instances”… and then each separate programs calendar can be dropped into the page with a shortcode like [calendar 1]…… [calendar 2]

etc…

Thanks.