From the St. Patrick School Handbook:

Pre-School students (3 year olds) must be three, pre-kindergarten (4 year olds) must be four, kindergarten students must be five years old on or before September 1st. Any exceptions to this rule, if classroom space is available, will be made by the administration only after preliminary testing and observation by the classroom teacher. Ages must be verified by a certificate of live birth and immunization records must be complete and updated. We are required to have these records on file by the first day of the school year.