Arizona daycare ratios by age
Arizona's child care center rule (Ariz. Admin. Code R9-5-404(A)) sets the staff-to-child ratios below: one adult for every 13 three-year-olds. Read on 2026-10-31; your licensing consultant has the last word.
Arizona child care center ratios and group sizes
| Age | Children per adult | Largest group |
|---|---|---|
| Infants (under 12 months) | 1 to 5 | not set by age |
| Toddlers (12 to 24 months) | 1 to 6 | not set by age |
| Two-year-olds | 1 to 8 | not set by age |
| Three-year-olds | 1 to 13 | not set by age |
| Four-year-olds | 1 to 15 | not set by age |
| Five-year-olds (not yet in school) | 1 to 20 | not set by age |
How many adults does my room need in Arizona?
Type how many children of each age are in the room.
What the rule says
Infants 1:5 or 2:11; 1-year-old children 1:6 or 2:13; 2-year-olds 1:8; 3-year-olds 1:13; 4-year-olds 1:15; 5-year-olds not school-age 1:20; school-age 1:20. No maximum group size in the rule; ratio set by youngest child in group.
Rule: Ariz. Admin. Code R9-5-404(A). Read on 2026-10-31 at law.cornell.edu. Where the rule's ages split one of ours, the younger, stricter figure is shown. This is the rule for licensed centers; family child care homes, school-age care and mixed-age groups have their own rules. A reading of public regulations, not licensing advice.
Every stateThe sign-in book's live countHow to read your state's ratio rule