Yes. You must have a source of emergency lighting that is approved by the state or local fire marshal, or battery-powered lighting, available in each classroom in case of electrical failure.

Source Note: The provisions of this §744.3565 adopted to be effective September 1, 2010, 35 TexReg 7469; transferred effective March 9, 2018, as published in the Texas Register February 16, 2018, 43 TexReg 909