Hello Brian- There is no difference in the actual course or program, but it is simply asking for the reason you are taking it. The “4-Hour BDI – To Reduce Fines or Points” reason is when you elected the option to take traffic school with the court and the “4-Hour BDI – Court Mandated” means you appeared in court and were ordered to take the course for your citation as a requirement. Feel free to contact us if you have any further questions. Best Regards.