Full-time ground school or distance learning?
Distance learning is pretty much a case of paying up, getting access to all of the material, and then book yourself in to the brush-up weeks once you're ready.
Full-time ground school will have particular start dates to adhere to, but in the current market I cannot imagine many companies will be fully booked enough that you'd have to plan 12 months ahead.
Only way to find out is to e-mail them direct..