Why Are These Youngsville School Zone Lights On At Night?

I was driving through Youngsville the other night, and as I neared Earnest Gallet Elementary, I noticed that the lights were flashing on the school zone sign.

Is the "internal clock" on the sign in need of reset? Is there a switch in the school that was left on? Is it aliens trying to drive me batty?

(Youtube/99.9 KTDY)