Chicago public schools will start classes on Aug. 26 this coming school year, ending a long-held practice of a post-Labor Day opening, under a proposal announced Friday.

Classes will end on June 10; spring break will span April 14-18, and half-days for teacher training will be scrapped.

That’s the result of months of discussion following a mutual agreement by CPS officials and the Chicago Teachers Union to dump the current “year-round’’ school calendar that begins in August and the “traditional” calendar, that starts after Labor Day, in favor of one “unified” calendar.

School board members must still approve the proposal.