The sibling nursery program is a babysitting service provided for and funded by the parents at Glenbrook. The children of co-oping parents older than six weeks are eligible for babysitting during the period parents are co-oping at school.
Each year, a parent coordinator works to find individuals to meet the sibling nursery needs. A babysitter is hired on a ratio of a maximum of four children to one adult, which would include no more than two infants under the age of six months per morning session. Parents with children in the nursery may not leave school property while their child is in care of the babysitter.