Twins are quite stressful for mothers, and 4 infants would be like having quadruplets. Usually the ratios continue to rise as the children get older. Here's California's rules, for example. From kindergarten (66 months age on average) and up it's 14:1
- Infants (birth to 18 months old) -1:3
- Toddlers (18 months to 36 months old) -1:4
- Preschool (36 months to enrollment in kindergarten) - 1:8
- Children enrolled in kindergarten through 14 years old - 1:14
Are these numbers based on anything concrete or are they just judgment calls? Whatever one thinks about class sizes, 14:1 seems absurd as a legal limit for everyone. There's no clear and present danger with having an adult watch 30 4th graders. (My guess is the preschool and toddler cutoffs are also too strict, although I feel less confident.)
Twins are quite stressful for mothers, and 4 infants would be like having quadruplets. Usually the ratios continue to rise as the children get older. Here's California's rules, for example. From kindergarten (66 months age on average) and up it's 14:1
- Infants (birth to 18 months old) -1:3
- Toddlers (18 months to 36 months old) -1:4
- Preschool (36 months to enrollment in kindergarten) - 1:8
- Children enrolled in kindergarten through 14 years old - 1:14