Arizona childcare ratios.
The staff-to-child ratios below are the commonly cited requirements for licensed childcare centers in Arizona, regulated by the Arizona Department of Health Services.
| Age band | Ratio (children per adult) | Staff for 20 children |
|---|---|---|
| Infants (under 12 months) | 1:5 | 4 |
| Toddlers (2-year-olds) | 1:8 | 3 |
| Preschool (4-year-olds) | 1:15 | 2 |
| School-age | 1:20 | 1 |
Arizona note: Arizona also allows a 2:11 staffing option for infant rooms.
Ratios shown are the commonly cited center-based licensing requirements, simplified into four age bands. States define age bands differently (often by month), and family/home programs, license-exempt programs, and local rules can differ. This information is provided for general reference only, is not legal or licensing advice, and Seedling makes no guarantee of its accuracy or completeness. Staffing and licensing decisions are your responsibility: always verify current requirements with your state licensing agency. Last reviewed July 2026. Sources: the Arizona Department of Health Services (find it via childcare.gov's Arizona resources ) and the federal ratio guidance , which hold the authoritative rules.
How many staff do you need?
Enter your enrollment by age group and the free calculator applies Arizona's ratios, rounding up per group the way licensing does.
Open the ratio calculatorWhat these ratios mean for tuition
Staffing rules like these set the cost floor for care: the median Arizona center charges about $215 a week for an infant spot. See median prices for every Arizona county.
Arizona childcare costs by countyCommon questions
What is the infant ratio for childcare centers in Arizona?
Arizona's commonly cited center-based infant ratio is one adult for every 5 infants. Arizona also allows a 2:11 staffing option for infant rooms. Verify current rules with the Arizona Department of Health Services.
How many staff do I need for 20 preschoolers in Arizona?
At Arizona's commonly cited 1:15 preschool ratio, 20 four-year-olds require 2 staff (20 divided by 15, rounded up). Try your own numbers in the free ratio calculator.
Who regulates childcare licensing in Arizona?
The Arizona Department of Health Services licenses child care in Arizona and publishes the authoritative ratio, group size, and staffing rules. Requirements change, so always confirm against the current regulations.
How do centers stay in ratio during the day?
Ratios drift as children arrive, leave, and move rooms. Software like Seedling tracks each room live as children check in and staff clock into rooms, and flags a room the moment it needs another adult, with an audit trail for licensing visits.