According to Fox6 on August 18th:

Walker High School is being dismissed because of a gas leak, according to Jasper City Schools.

An underground line is leaking on school property, the fire department confirmed.

Bevill State Community College’s Jasper campus is also asking students, faculty and staff to evacuate the campus immediately.

Those parked at Walker Hall should not use their cars to leave campus, they are being asked to arrange transportation.

Alagasco is on the scene working to repair the leak.