School hours for CCISD campuses are as follows. Elementary schools will begin the day at 8:00 a.m. and end at 3:25 p.m. All secondary campuses begin at 9:00 a.m. and end at 4:25 p.m. Please refer to the CCISD school calendar for more information concerning class days for the 2017-2018 school year. 2017-2018 School Calendar