ENROLLMENT St. Mary’s County, MD (HS) CDI HS is committed to providing timely information to families, staff, and community members. This program enrolls eligible families of Head Start children (age 3-5). For enrollment, please contact the administration office. Main Office 10065 E. Harvard Avenue Suite 700 Denver, CO 80231 info@cdiheadstart.org Media Queries media@acf.hhs.gov Accessibility opens in a new windowFollow Share your Feedback