According to a message I received on Facebook this morning, In-N-Out Burger in Frisco is now hiring. You must apply online prior to the interview. Starting salary is $10/hour. They offer flexible schedules to accommodate school schedules too.
Visit http://www.in-n-out.com/employment_restaurant.asp to apply online.
The new In-N-Out Burger is located at 2800 Preston Road, Frisco, TX 75034 -- just north of SH 121 near Stonebriar Centre.