What do you do if you can't afford a driving school for your sons first licensing?

You might check with the principal or vice-principal of your son's school - there may be free or low-cost Driver's Education class avaiable during school hours or after school. If not, check with your town, city, county, or state government to see if there is a government program to teach driving skills for free or at low cost. First place to check would be the Motor Vehicles Administration (or Department of Motor Vehicles). If not, would you have time to teach your son yourself on weekends? If not, would a trusted family member who lives nearby be willing and available?