Ontario Elementary School Enrolment By Grade And Board

Enrolment data for junior kindergarten through grade 8 in Ontario's public and Catholic elementary schools, aggregated by school board. The dataset is compiled from school submissions to the Ontario School Information System (OnSIS). It is maintained by the Government of Ontario and was last updated in February 2026.

Use Cases

• Analyze grade 1 enrolment trends across different school boards to forecast future classroom needs.
• Compare junior kindergarten and kindergarten enrolment figures to assess early childhood education uptake.
• Calculate total enrolment per board to analyze funding distribution and per-student resource allocation.
• Identify boards with suppressed data (counts under 10) to map areas with very small student populations.

Strengths

• Includes enrolment counts for 10 distinct grade levels from junior kindergarten to grade 8
• Data is aggregated by both school board number and board name for structured analysis
• Covers two major elementary school types: public and Catholic systems

Limitations

• Enrolment numbers for categories with less than 10 students are suppressed, creating data gaps
• Starting in 2018-2019, numbers are rounded to the nearest five, reducing precision for small counts
• Rounded individual figures may not sum to reported rounded totals due to calculation method

Provenance

Source

Government of Ontario

Collection Method

Reported by schools to the Ontario School Information System (OnSIS), October Submissions.

Time Range

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Freshness

Updated regularly, with a recent update in February 2026.

Geography

Province of Ontario, Canada