Ratios are the backbone of BC's Child Care Licensing Regulation — they drive your staffing costs, your capacity, and your compliance. Here's the practical summary. (Confirm details with your health authority licensing officer; rules get updated.)
The common ratios
| Licence type | Ratio | Max group | Staff tiers |
|---|---|---|---|
| Group — under 36 months | 1:4 | 12 | 1 → up to 4 · 2 → 5–8 · 3 → 9–12 |
| Group — 30 months to school age | 1:8 | 25 | 1 → up to 8 · 2 → 9–16 · 3 → 17–25 |
| Preschool (part-day) | 1:10 | 20 | 1 → up to 10 · 2 → 11–20 |
| Group — school age | 1:12 (K/Gr 1) · 1:15 (Gr 2+) | 24–30 | by composition |
| Multi-Age Child Care | 1:8 | 8 | ECE required |
| Family Child Care | — | 7 | age-mix rules apply |
Try the free BC staff ratio calculator — enter your enrolment and it tells you the staff required.
Certification matters as much as count
It's not just how many adults — it's which adults: Infant/Toddler Educator (ITE) requirements for under-36-months rooms, ECE and ECE Assistant mixes for 3–5 rooms, and Responsible Adult qualifications for school age. Track expiry dates; lapsed first-aid certificates are one of the most common inspection findings.
Ratios are a profitability lever
Because staffing is ~60–75% of a typical centre's costs, group composition is one of your biggest financial decisions: a 9th child under 36 months requires a 3rd staff member — that one enrolment can reduce margin until the room fills toward 12. Model it in the profitability calculator before you commit to a room structure, and track live attendance against ratios through the day so you're never offside at pickup time.
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Start free — no card needed → See the live demoFrequently asked questions
- What is the infant-toddler ratio in BC?
- Group child care for children under 36 months runs 1 adult to 4 children, with staffing tiers up to a maximum group size of 12 (1 staff for up to 4, 2 for 5–8, 3 for 9–12) and Infant/Toddler Educator certification requirements.
- What ratio applies for 3–5 year olds in BC?
- Group child care (30 months to school age) runs 1:8, up to a maximum of 25 in a group (1 staff for up to 8, 2 for 9–16, 3 for 17–25).
- Do ratios include the licensee?
- Staff counted in ratio must meet the certification requirements for that licence type and be working directly with the children. Always confirm specifics with your licensing officer.