Licensing & compliance
Wisconsin Daycare Ratios and Maximum Group Sizes
In Wisconsin group child care centers, one child care worker may care for 4 children under 18 months. The number rises with age up to 18 children aged 5 and over.
Wisconsin group child care center ratios
| Age of children | Children per child care worker | Maximum group size |
|---|---|---|
| Birth to 18 months | 4 | 8 |
| 18 months to 2½ years | 7 | 14 |
| 2½ to 3 years | 8 | 16 |
| 3 to 4 years | 10 | 20 |
| 4 to 5 years | 13 | 26 |
| 5 years and over | 18 | 36 |
This table is scheduled to change on August 1, 2027 under 2025 Wisconsin Act 15. Check the current rule before relying on these figures.
Source
These figures come from Table DCF 251.055 of the Wisconsin Administrative Code, administered by the Wisconsin Department of Children and Families.
Last verified: October 2026
Rules that can change these numbers
For mixed-age groups, the ratio is adjusted on a pro rata basis by the ages of the children; the state provides a Staff-to-Child Ratio Worksheet for this. When infants and toddlers are part of a mixed-age group, the group may not exceed 8. Maximum group size does not apply during naps, field trips, outdoor play, or in areas used only for eating, but ratios still apply for awake children.
Track staff-to-child ratios in Caredence
Caredence compares the children checked in to each classroom with the staff checked in to that room, using the children-per-staff limit your center sets for the room, and shows an over-ratio warning when there aren't enough staff. It doesn't apply state rules automatically, so use the figures above to choose each room's limit.
Check another location with the state ratio calculator, or see how Caredence supports daycare compliance.
For a national overview, read the staff-to-child ratios by state guide.
Frequently asked questions
What is the infant ratio in Wisconsin daycares?
What is the ratio for 3-year-olds in Wisconsin daycares?
What is the maximum group size in a Wisconsin daycare?
This page is a summary for reference, not legal advice.
Run your daycare on one platform
Caredence brings attendance, billing, messaging, and reporting into one place — so you spend less time on paperwork and more time with kids.
Keep reading
50+ Preschool Activity Ideas
Ready-to-run small-group, circle-time, and outdoor activities.
Read guidePreschool Science Experiments
12 simple, low-cost science experiments for childcare classrooms.
Read guideDaycare Staff-to-Child Ratios by State
Required ratios and group sizes for licensed centers.
Read guide