There are 3 levels to becoming an paramedic. First level is an EMT-B, this takes 3 weeks plus 6 months to a year of training. Second level is an EMT Intermediate, this takes 30 to 350 hours depending on your state laws. Third level is the paramedic.
Schooling is about 2 years full-time if you are in a Accredited Program, that will give you a Associates Degree like I am. If your going in to a Paramedic progam with no experience, you will be lucky to even get accepted TO the program first. Usually most programs want candidates to have some experience, as a EMT-Basic, or at least First Responder....something that required you to practice some basic EMS Skills.