California Childcare Licensing
California Childcare Staff-to-Child Ratios (2026)
California sets a maximum staff-to-child ratio for each age band a licensed center serves. The strictest ratio applies to the youngest children: Infant (0-24 months) must be supervised at no looser than 1:4. Meeting these ratios at all times is a core California licensing condition.
Last updated: April 2026
Researched by the TotReady Research TeamCalifornia Staff-to-Child Ratios: The Specifics
In California, the maximum staff-to-child ratio for the Infant (0-24 months) age group is 1:4.
In California, the maximum staff-to-child ratio for the Toddler (24-36 months) age group is 1:6.
In California, the maximum staff-to-child ratio for the Preschool (3-5 years) age group is 1:12.
In California, the maximum staff-to-child ratio for the School Age (6+ years) age group is 1:14.
California does not impose a general statewide maximum group-size cap for child care centers separate from staff-to-child ratios
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the principal group-size limit is in the infant/toddler care component, where a maximum of 12 infants may be in a room (one fully-qualified teacher plus aides each supervising no more than 4 infants, a 1:4 infant ratio) and a toddler group is likewise capped at 12 (Cal. Code Regs. tit. 22 § 101216.3).
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California Staff-to-Child Ratios at a Glance
| Infant (0-24 months) | 1:4 |
|---|---|
| Toddler (24-36 months) | 1:6 |
| Preschool (3-5 years) | 1:12 |
| School Age (6+ years) | 1:14 |
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California Staff-to-Child Ratios: Frequently Asked Questions
What is the infant staff-to-child ratio in California?
California requires a staff-to-child ratio of 1:4 for the Infant (0-24 months) age group.
Does California cap maximum group size?
California does not impose a general statewide maximum group-size cap for child care centers separate from staff-to-child ratios; the principal group-size limit is in the infant/toddler care component, where a maximum of 12 infants may be in a room (one fully-qualified teacher plus aides each supervising no more than 4 infants, a 1:4 infant ratio) and a toddler group is likewise capped at 12 (Cal. Code Regs. tit. 22 § 101216.3).
How many staff do I need for my California classroom?
Divide the number of children in each age group by the maximum ratio shown above, rounding up. California ratios must be maintained continuously, including during naps, meals, and transitions.
California childcare licensing rules are amended regularly. This page is compiled from published California administrative codes and statutes for informational purposes only — always verify current requirements with the California Department of Social Services, Community Care Licensing Division before relying on them. TotReady provides information and document templates, not legal or regulatory advice.