Yes they have have classes for drug and alcohol. You store your clothes in a room with everyone else's on shelves with your name and bed number on the bag. You can only have one small bag of belongings. You don't have to leave the building but you have to leave the dorms and go downstairs to class or chapel.
Here's the link to their website. They have small lockers for personal property. https://ugmdallas.org/ You leave in the morning and come back in the afternoon, but my understanding is that you have a bed and a locker assigned.
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