The District 300 Central Office will resume normal office hours beginning on August 2, 2021. During normal office hours, the District 300 Central Office is open Monday through Friday from 7 a.m. to 5 p.m. The District is closed September 6 (2021), October 11, November 24, 25, and 26, December 24, 27, 30, and 31, January 17 (2022), February 21 ....