Dallas Elementary School District 327 issued the following announcement on June 20.
BACK TO SCHOOL 2018-2019
July 19: Registration at DCE library 8 a.m. to 7 p.m.
August 21: Back to School Open House 5:30 p.m. to 7 p.m.
August 22: 1st Day of School
Original source can be found here.