a dilemma

i have a good employee who is fairly new to the job. he's in high school and is one of those people who seems bright but has no motivation. he's all but dropped out of school and it drives me crazy that someone with his potential could choose to make his life that much more difficult. half of me wants to require him to go to school in order to keep his job. the other half says that it's none of my business. he's a good kid and i want him to do well but i'm not sure it's possible without even a high school degree.