St. Marguerite d'Youville CSS was formed and commenced classes at the Glenvale location starting in September 1995, and continued to reside there until the end of the 2001/2002 school year.

Back in 1999, the DPCDSB initially considered a plan with the public board to include St. Marguerite d'Youville (then searching for a new site) in a dual-school campus in the Springdale community.

This campus would have included both public and catholic schools using shared facilities, and also a community centre and park, and was to be located at the intersection of Sandalwood Parkway and Dixie Road.

Then-Mayor Peter Robertson called for the Ontario Education Minister to intervene, and accused the DPCDSB of bailing out due to a possible loss of identity on a campus with a public school.

[3] Ultimately, a new building was built to house St. Marguerite d'Youville on the proposed northerly site, on the east side of Dixie Road North between Sandalwood Parkway and Countryside Drive.

Rehearsals were done over a number of months, culminating in performances for school students during drama week and ending with a Friday night Wine & Cheese gala presentation for parents.