The Sisterhood was founded on October 15, 1650 in Le Puy-en-Velay, France, by Jean-Pierre Medaille, a French Jesuit.

The community was active in giving support to the orphans, caring for the sick, and educating the younger students.

Those changes were rendered moot as the Board decided to extend of the lease of St. Joseph's Morrow Park Catholic Secondary School at Tyndale until December 31, 2020.

[8] Toronto area councilor David Shiner stated he was surprised that board officials were considering expropriation, saying that Cummer and Bayview site would better suite a school of 400-500 students, than the planned 800-1000 student school.

[9] The TCDSB also owns the former St. Leonard school near Finch Ave. E. and Leslie St., which is currently leased.

Historically, the school has always been in (this) community.’[9] On August 27, 2015, the TCDSB trustees voted 6–4 to expropriate 17 townhomes on the southern end.

The new facility construction was originally set to be completed in September 2020, but it was pushed to January 2021 due to the COVID-19 pandemic in Toronto.

After months of imminent closures and high vaccine rates, the school fully opened in September 2021 in time for the new 2021-22 academic year.

The Fraser Institute's 2018/2019 report on St. Joseph's Morrow Park gave it an overall grade of 8.1/10, ranking it at 52 of 718 publicly funded secondary schools in Ontario.