How Ontario licensing ratios and the College of ECE shape your staffing plan

What to take away

How Ontario's licensing regulation sets staff-to-child ratios by age group

Ontario does not leave ratios to operator judgement. The licensing regulation spells out how many children one adult can supervise, by age, and how many children can share a room at all. That second number, the group size, is the one operators forget.

For centre-based child care, the rules live in Ontario Regulation 137/15, made under the Child Care and Early Years Act. That regulation states the ratio for each age band, the maximum group size, and who counts as a qualified staff member. It also sets the age mix rules, so you cannot average ratios across a mixed room.

Ratios tighten as children get younger. Infants need the most adult attention, school-age children the least. Toddler and preschool rooms sit in between. The exact numbers matter because they decide how many staff you roster on a quiet Tuesday in February, not just on a busy September morning.

Licensing officers check both numbers during inspections. A centre that is ratio-compliant but group-size non-compliant still faces compliance action. For the wider inspection sequence, see our licences and compliance walkthrough.

Reading the ratio table: infant, toddler, preschool and school-age rooms

The table below restates the staff-to-child ratios and group size caps that the current Ontario Regulation 137/15 sets for centre-based child care, by age band. Licensing officers apply those figures directly, so a roster that departs from them is a compliance risk.

The pattern is simple: as children get older, one adult can supervise more of them, and the room can hold more children before a second room is needed. An infant room with six children needs two staff. A preschool room with sixteen children needs two staff. A school-age room with thirty children needs two staff.

Mixed-age rooms complicate the count. If you group toddlers with preschoolers, the younger age band usually sets the ratio. That protects the younger children, and it usually means more staff than the older children alone would require.

Ratios apply at all times children are in care, including arrival, departure, outdoor play, and rest periods. A lunch break that leaves one staff member with a full preschool room is a ratio breach, even if it lasts twenty minutes. Relief staff and floaters exist for this reason.

Some operators try to stretch ratios by counting volunteers or students. Ontario Regulation 137/15 defines who counts as a qualified staff member for ratio purposes, and volunteers generally do not count. Counting them anyway is one of the fastest routes to a compliance order.

The regulation is published on e-Laws | Ontario.ca, along with the group size rules.

What the College of Early Childhood Educators registration requirement means for hiring

In Ontario, the title registered early childhood educator is protected. To use it, a person must hold a current registration with the College of Early Childhood Educators. That registration is the credential licensing officers look for when they count qualified staff.

Registration is not the same as a diploma. A graduate of an early childhood education program still needs to register with the College before they can be counted as a registered early childhood educator in a licensed room. Registration includes a fee, a criminal record check, and a commitment to the College's code of ethics and standards of practice.

For your hiring process, that means three checks before a new hire starts in a qualified-staff position: confirm the diploma or equivalency, confirm current College registration, and confirm the registration is in good standing. A lapsed registration is a staffing gap, even if the person is standing in the room.

Some positions in a licensed centre do not require College registration. Ontario Regulation 137/15, not the College, decides which staff count as qualified for ratio purposes and which do not. A centre can employ assistants and support staff, but it cannot count them toward the ratio unless the regulation allows it.

This affects your job postings. If you advertise a room lead role, say that College registration is required, and ask for the registration number. That single line filters out applicants who cannot legally fill the ratio. Our guide to staff: finding and developing covers the recruitment side in more detail.

Counting qualified staff against your room-by-room enrollment limits

Your licensed capacity is not one number. It is a set of room-by-room enrollment limits, each set by the lower of the ratio cap and the group size cap for that age group. A centre licensed for sixty children may have rooms that can only hold six, ten, sixteen, or thirty at a time.

If your toddler room has a group size cap of ten, and you have one registered early childhood educator scheduled, you can enrol five toddlers, not ten. The second five spaces stay empty until a second qualified staff member is on the floor.

So the planning question is not how many children you can licence. It is how many qualified staff you can roster, hour by hour, across the opening day. Build the roster first, then set enrolment.

A worked example makes it concrete. Suppose you run a preschool room with a group size cap of sixteen and a ratio of one to eight. To fill all sixteen spaces, you need two qualified staff on duty at every moment the room operates.

If one calls in sick and you cannot replace them, you drop to eight children for that day. That is a revenue decision, not just a scheduling one.

Keep a room-by-room table on the wall of the office. List each room, its age group, its group size cap, its ratio, and the number of qualified staff required to fill it. Update it whenever a registration lapses or a staff member leaves. This table is also useful during licensing inspections and parent tours.

The same logic applies to before and after school care. School-age ratios are looser, but the group size cap still applies, and the split between kindergarten and school-age children matters. Get the room-by-room numbers wrong and you either under-enrol, losing fee revenue, or over-enrol, risking a compliance order.

The operations manual for a childcare centre is a good place to record these limits.

Building a staffing plan that survives enrollment growth and staff turnover

Turnover in early childhood education is high, and a resignation can close spaces within two weeks. A staffing plan that assumes stable headcount will fail. Plan for the gap, not the ideal.

Start with a coverage map. For each room and each shift, list the minimum qualified staff required by the ratio and group size rules. Then list your current qualified staff and their availability. The difference is your exposure. Every room where coverage depends on one person is a single point of failure.

Next, build a recruitment pipeline before you need it. Keep a list of registered early childhood educators who have applied previously and were a good fit. Maintain relationships with local early childhood education programs. Offer placements to students, who can become registered staff after graduation.

Then train internally. Assistants who are not counted in the ratio can still be developed toward registration. Some will pursue the diploma and College registration. Funding support for that path is a retention tool, and it builds your qualified pool over time.

Steps to turn the coverage map into a working plan:

Contingency cover matters as much as recruitment. A relief pool of two or three registered early childhood educators can keep a room open during illness, vacation, and training days. Without it, every absence becomes an enrolment cut.

Growth adds a second pressure. When you add spaces, you add staff requirements before you add fee revenue. Hiring and training take weeks, and registration checks take time. Your opening checklist of rules can be adapted into a growth checklist for new rooms.

Finally, remember that staffing is an employment relationship, not just a ratio calculation. Wages, hours, overtime, breaks, and termination rules fall under the Ontario Employment Standards Act. The province publishes a plain-language guide to those obligations at Your guide to the Employment Standards Act | ontario.ca, which is worth keeping alongside your ratio table.

Where the Child Care and Early Years Act fits into your compliance calendar

The Child Care and Early Years Act, 2014 gives Ontario its licensing system, and Ontario Regulation 137/15 carries the operational detail, including the ratios and group sizes above.

You can read the statute on the Child Care and Early Years Act.

The broader statutory framework for licensing, enforcement, and funding of child care in Ontario is also set out in provincial law, including the provisions that support the Canada-Wide Early Learning and Child Care agreements. That framework is published on Ontario's child care funding statute, and it is the reference point when funding rules change.

Two recent changes matter to your budget. Ontario signed the Canada-Wide Early Learning and Child Care agreement in 2022. It targets an average parent fee of $10 a day for eligible children by September 2025, and it ties operator funding to enrolment of eligible children.

The federal Canada Early Learning and Child Care Act, which became law in 2024, sets a national framework and reporting duties for that funding. The ratio and group size caps above still come from Ontario Regulation 137/15, and the agreements change the money attached to each space.

A compliance calendar keeps these obligations visible. Put licensing renewal, fire inspection, public health inspection, staff registration renewals, and first aid certification on the same calendar.

Review the calendar at the same time you review the staffing plan. Ratios, registrations, enrolment limits, and licensing dates all interact. A lapsed registration in March affects your enrolment limit in March, your licensing inspection in April, and your revenue for the term. One calendar, reviewed monthly, catches all three.

If you are assembling the underlying documents for a licence application or renewal, our summary of the paperwork a childcare centre needs covers what licensing officers expect to see.

Common questions