I would contact your school directly (phone or email) to find out the answer. The information might also be on the school's website. Alternatively, you could try contacting another student/parent who attends/has a child that attends the same school.
Adding to the previous answer you received, below are some additional resources you may find helpful for preparing for Back to School. The first link provides quick and easy access to the contact information for U.S. schools, in case you don't already have the telephone number for your child's school handy. Thanks for asking!