Commission scolaire de la Seigneurie-des-Mille-Îles
school district in Quebec, Canada

The Commission scolaire de la Seigneurie-des-Mille-Îles (CSSMI) is a former francophone school district in the Canadian province of Quebec. It comprises several primary schools and high schools across municipalities in the Laurentides region. The commission is overseen by a board of elected school trustees.
The headquarters are in Saint-Eustache.
The municipalities of Blainville, Boisbriand, Bois-des-Filion, Deux-Montagnes, Lorraine, Oka, Pointe-Calumet, Rosemère, Sainte-Anne-des-Plaines, Sainte-Marthe-sur-le-Lac, Sainte-Thérèse, Saint-Eustache, Saint-Joseph-du-Lac, Saint-Placide, and Terrebonne Ouest are a part of the school district. In addition, the following portions of Mirabel are served by this board: Saint-Augustin, Saint-Benoît, Sainte-Scholastique and a portion of Domaine-Vert.
This brief starts where responsible research should: with the source description of “Commission scolaire de la Seigneurie-des-Mille-Îles” as school district in Quebec, Canada. Everything that follows is an evidence route, not borrowed authority.
Why this record matters
The subject matters to the places & architecture register because the source frames it as school district in Quebec, Canada. Its deeper value depends on whether names, dates, institutions and citations support that framing.
Maps, plans, fabric surveys and administrative records can establish how the site’s name, extent and function changed over time. The source revision retrieved here is dated Jan 20, 2025. The linked authority identifier is Q19600743. VIAF identifies the subject as 130135847. Authority coordinates are 45.565, -73.909. None of the 3 selected statements returned an explicit reference.
Modern boundaries and familiar names can conceal earlier jurisdictions or structures that do not align with the present site. The lead is largely declarative, so disagreement and counter-evidence require a deliberate search beyond the opening account. Authority statements aid reconciliation but still require their own references, qualifiers and ranks to be checked.
How to read it
Treat names, boundaries and functions as historically changeable. Maps, plans, inventories and administrative records can clarify what the place meant at different dates.
- Historic place names
- Jurisdictional context
- Routes into maps and plans
Contemporary maps, plans, listed-building records, estate papers and the responsible local or national archive.
Three-step research path
- Establish the record: confirm the title “Commission scolaire de la Seigneurie-des-Mille-Îles”, its source revision and the description used here.
- Expand the search: follow Commission scolaire de la Seigneurie-des-Mille-Îles primary sources, Commission scolaire de la Seigneurie-des-Mille-Îles archive and Commission research across catalogues and specialist indexes.
- Test the account: compare the strongest cited source with the responsible institution’s current record and note any disagreement.
Questions for further research
- Which source most directly establishes the central claim about “Commission scolaire de la Seigneurie-des-Mille-Îles”?
- Which authority defined the place, boundary or structure at the relevant date?
- What physical evidence or contemporary plan supports the description?
Search terms from this dossier
This entry incorporates text from “Commission scolaire de la Seigneurie-des-Mille-Îles” on English Wikipedia. Contributors are listed in the page history. Text is available under the Creative Commons Attribution-ShareAlike 4.0 License. Selected authority identifiers and statements are retrieved from Wikidata under CC0; their references and qualifiers remain part of the verification path.