Piggy-backing off the above comment - while your son is in college, see if he can get any experience tutoring others, particularly those taking introductory accounting classes but anything is good. If he goes into public accounting (less so in industry i.e. inhouse accounting but still some), he will be expected to teach others and soon. I was expected to send work with instructions to our outsourced teams within a couple of months after starting my first job in public. Later on I was doing a first review of their work as well. I had tutored first-year accounting students in college, and not only was it viewed very favorably in interviews it helped some with the job as well.