D-LS ISD approves revised calendar Wed, 06/24/2020 - 5:00am Students in Daingerfield-Lone Star ISD will head back to the classroom August 10. This comes after the board approved a ...PLEASE LOG IN FOR PREMIUM CONTENT. Our website requires visitors to log in to view the best local news. Not yet a subscriber? Subscribe today! Read more about D-LS ISD approves revised calendar