A group of 12 former and current Detroit Public School principals have been charged with running a lucrative million-dollar kickback scheme involving school supplies that were never delivered. Norman Shy, a 74-year-old businessman, is charged with paying some $900,000 to the principals who used him as a supply vendor. He allegedly scammed a number of schools like this for 13 years, giving money to principals who cooperated in the operation along the way.