"District 49" On All References, "D49" When Space is Limited
Use "District 49" on all written and spoken references. Use "School District 49" when context is necessary for clarity. "D49" may only be used when space is limited, but "D-49" (with a hyphen) should never be used. In prose, it's unnecessary to capitalize "district" when it's not used with the official name. For example, "District 49" and "the district", or "District 49 teachers welcome students back to school in August," or, "Teachers in the district returned to school July 26."