To qualify for the Career Education Options (CEO) Program, you need to be 16 to 20 years old. Twenty-year-olds remain eligible for the current school year as long as they turn 21 after September 1. You cannot be enrolled in high school upon entering the CEO Program.
You can enter CEO whether or not you've earned a GED, but NOT if you have a high school diploma. The program is intended for individuals for whom graduation from their high school is highly unlikely.