Enrolment counts students, capacity describes a defined measure of school space, and utilization compares the two. These numbers are useful only when their definitions, dates, and scope are clear. A utilization percentage is a planning indicator, not a complete description of a student’s classroom experience.
YCDSB’s Long-Term Accommodation Plan resources provide a local context for these measures. Always use the definition and notes in the particular profile or report you are reading.
Enrolment: identify who and when
Ask whether the figure is actual or projected, which school year it concerns, and what population it includes. A count for one date should not automatically be treated as the count for an entire year.
Projected enrolment estimates a future condition. Compare projections across versions only after checking whether the assumptions or program arrangements changed. A revised projection is not the same thing as a confirmed student moving to the school.
Capacity: read the definition rather than guessing
A capacity measure may describe particular kinds of instructional space using the planning rules identified in the report. Check whether temporary space or specialized rooms are included and whether the document explains any exclusions.
Do not equate a capacity number with the number of children physically able to stand inside the building. Also avoid assuming that every classroom can be used interchangeably for every program. The report’s definition is the one relevant to the calculation.
If a profile lists several space measures, preserve their labels in your notes. Combining figures with different definitions creates a misleading comparison.
Utilization: work through the arithmetic
In a hypothetical profile, enrolment is 450 and the stated capacity is 500. Dividing 450 by 500 and multiplying by 100 gives 90% utilization.
If enrolment is 550 against that same capacity measure, the result is 110%. These examples illustrate the calculation; they are not figures for a YCDSB school. A report may use its own definitions or presentation, so confirm them before reproducing the percentage.
When utilization changes, ask which part changed. Enrolment may have increased, the capacity measure may have been revised, or both may have changed. The percentage alone does not explain the cause.
Ask what the indicator leaves out
A school-wide ratio does not tell you the size of every class, the needs of each program, the condition of the building, or how rooms are scheduled. Those questions require other evidence.
Similarly, a high percentage does not, by itself, confirm which accommodation option will be chosen. A lower percentage does not, by itself, establish that a building or program has no future role. Planning involves a wider set of considerations and the applicable decision process.
Use a three-number check
- Enrolment: actual or projected, population, and date.
- Capacity: definition, included space, and any notes.
- Utilization: formula, period, and rounding used.
Then add the planning question: “What does this comparison indicate, and what further evidence is needed before considering a response?”
Ontario’s capital resources for school boards provide broader context for school-space planning. For a local conclusion, use the relevant YCDSB report and current profile.
These three numbers become useful when they are read together and explained accurately. Families can then discuss the planning issue without turning a ratio into an unsupported prediction about boundaries, class sizes, or construction.
Official source information checked October 1, 2026. This independent family guide is not an official YCDSB publication.