it depends if the school is leaving high school or leaving the college,if it is the high school and the person still wants to continue his or her education

then i will advice the person to continue with the education first and after they are done with

schooling they can now proceed to doing business,but if if the person just finished college

then yeah they can begin doing business after leaving the college,infact doing the business after

leaving the college will be a great idea if the business is a business with lovely prospect