Ontario Secondary School Locally Developed Course Enrollment

Ontario's data on enrollment in locally developed secondary school courses, approved by school boards to meet needs not covered by the provincial curriculum. The dataset is organized by school board and includes course codes, descriptions, grades, pathways, and enrollment counts. It is provided by the Government of Ontario and was last updated in March 2026.

Use Cases

• Analyze enrollment trends in specific course_codes across different school_board_names to identify popular or declining local courses.
• Compare enrollment_numbers by grade and pathway_or_destination to understand student progression through alternative curriculum tracks.
• Assess the distribution of course offerings between public and Catholic school_board_types across Ontario.
• Identify geographic or board-level gaps in educational provision by examining course_description and enrollment data suppressed for privacy.
• Study the impact of the 2018-2019 rounding rule on enrollment_number trends for longitudinal analysis.

Strengths

• Data covers multiple school years, with specific methodology changes noted starting 2018-2019.
• Includes distinct categories for public and Catholic secondary school types.
• Privacy protection is implemented through suppression of counts below 10 students.

Limitations

• Enrollment numbers are rounded to the nearest five starting 2018-2019, reducing precision for small classes.
• Data suppression for categories with less than 10 students creates gaps in analysis for niche courses.
• Specific row counts, column counts, and exact temporal coverage are unknown.

Provenance

Source

Government of Ontario

Collection Method

Enrollment data reported by schools to the Ontario School Information System (OnSIS).

Time Range

Includes data from at least 2018-2019 onward.

Freshness

Last updated March 2026.

Geography

Ontario, Canada.