If the child is 7 or younger, the sitter must be at least 14 years old. An 8-12-year-old must pass a safety first class to be left unsupervised. A long-term guest membership may be added to existing memberships – contact Membership Services for details at 410-730-1802. Guest passes may also be used for a babysitter. The number of children observed by a single person may not exceed five children less than 8 years of age, or 10 children total.