My 4 year old nephew has ALL. If you "have" to have leukemia, this is the least bad of the two. They do lots of chemo, steroids, and other drugs right off the bat to fight the initial "white cells run amok" and then you go into what they call maintenance, where the treatments occur on a regular schedule for several years until you go into remission. However, that supposes you don't get any type of infection or even the flu during that period, which can be fatal at worst, and set your treatment back months at best. My guess is that unless he comes through the initial treatment phase more quickly than Caleb did (it took him a year of constant treatment) Shon won't be able to start school in the fall. Caleb was in virtual isolation while they destroyed his immune system and built it back up.
You guys keep this family in your thoughts. The prognosis may be good, but the long road to get to remission sucks like you could not believe.