“The school bus operation has been outsourced to balance the books of the school district” charges the lawsuit filed in federal court in Chattanooga today. “To maximize profit, the contractor overcrowded routes and offered school bus drivers low pay, few hours, and inadequate driver training and support. To avoid a self-created driver shortage, as they had experienced in other markets, the contractor sought out the most poorly trained, inexperienced, and poorly-qualified drivers to transport the most precious commodity of this community”