Ohio daycare ratios and group sizes, explained

Ohio sets the required ratios and group sizes for every licensed center in Ohio Administrative Code 5180:2-12-18, and the numbers themselves are in its Appendix A. The rule has been in effect since October 29, 2021, and is the current version as of November 2026.

Each band runs up to, but not including, the next age listed. A ratio is the most children one adult may care for. Group size is the most children allowed in one group, no matter how many adults are added, so a full group of 24 three-year-olds needs at least two teachers.

Only adults who are actually supervising count, since the rule leaves out staff busy with duties that interfere with supervision. A center with seven or more children in the building must also have a second employee on site, and every center must post Appendix A where parents can see it.

When age groups are combined, the ratio for the youngest child in the group applies, under section (B) of the ratio rule. That includes a child who is visiting an older room to get ready to move up. The rule allows a few exceptions:

• One older child: if a single child aged 2½ or older is permanently placed in a group of children from the next older band, the older children's ratio and group size apply.
• Small centers: all ages may be combined when there are 12 or fewer children in the whole center.
• Shared open rooms: groups may share one undivided space only if every child is at least 2½ and ratios are kept. The room must also have at least 35 square feet per child and stay within its occupancy limit.
• The summer before kindergarten: preschoolers may join the school-age group once their last preschool year ends and count as school-agers for ratio.

Group size limits don't apply during nap, meals, snacks, outdoor play, field trips, routine trips or special occasions, but ratios still do. Two classes can share the playground, for example, as long as each one keeps enough adults with it.

Ohio allows one exception at nap time. Under OAC 5180:2-12-20, a center may double the ratio for no more than two hours, and only when all of these are true:

• Every child in the group is resting on a cot or mat.
• The group has no infants.
• Enough staff are in the building to return the group to its normal ratio.

On field trips and routine trips such as walks, the normal ratios apply, and on field trips each child must be assigned to a specific staff member (OAC 5180:2-12-14). Vehicles must be checked at the end of every trip to make sure no child is left inside.

Ohio's minimums allow more children per adult than Caring for Our Children (CFOC), the national health and safety standards from the American Academy of Pediatrics and its partners. CFOC notes that its ratios fall within the ranges NAEYC uses to accredit programs.

The Gold column is not a rule for every classroom. To earn Ohio's top Step Up To Quality rating, a center must meet those lower ratios and group sizes in 40% of its classrooms (SUTQ program standards). Read more in what Ohio's Step Up To Quality ratings mean.

Nap time is another difference. CFOC says ratios should hold for children 30 months and younger even while they sleep. For older children, it calls for at least one adult in the room and more staff on site for emergencies.

Fewer children per adult means more attention for each child. CFOC cites studies finding that children in groups that meet its ratios, particularly infants and toddlers, get more sensitive care and score higher on developmental assessments, especially vocabulary.

Ratios are also about safety. The standards call low ratios essential for fire safety when children can't walk out on their own, and they warn that caring for too many young children raises caregiver stress.

Group size matters too. For 3- and 4-year-olds, CFOC says the size of the group is even more important than the ratio. It also notes that ratios alone don't predict quality, but warm, direct interaction is more likely when each adult has fewer children.

1. Before the tour, read the center's recent inspection reports on Ohio Child Care Search and note any findings about ratios or supervision.
2. Find the posted ratio chart. The written policies a center gives families must also state its ratios and group sizes (Appendix B to OAC 5180:2-12-07).
3. Count the adults and children in the room your child would join, and compare them with the chart for that age.
4. Ask how the center covers teacher breaks and the first and last hours of the day, and whether groups are combined then.
5. Ask whether nap-time ratios are ever doubled, and for how long.
6. If a room is often over ratio after you enroll, raise it with the director. You can also report a suspected violation to the toll-free number on the center's posted license (Center Parent Information).

For comparison, All Around Children keeps 1 caregiver per 5 infants, 1 teacher per 7 toddlers, and 1 per 12 preschoolers, 14 pre-K children or 18 school-age children.