Local legislation may regulate the operation of daycare centers, affecting staffing requirements. Laws may mandate staffing ratios (for example 6 weeks to 12 months, 1:4; 12 to 18 months, 1:5; 18 to 24 months, 1:9; et and even higher ratios for older children). Legislation may mandate qualifications of supervisors. Staff typically do not require any qualifications but staff under the age of eighteen may require supervision. Typically, once the child reaches the age of twelve, they are no longer covered by daycare legislation and programs for older children may not be regulated.