Not to, by any means, bash a learning institution but the only reasons to go to school for 3D graphics would be A) Money-making and B)Money-making. Most big graphics houses have a VERY small percentage of college-trained artists. The reason for this is that, with the exception of a few schools for "the Big Dog" programs, the 3D industry moves too fast. The people making the most money in CGI are the innovators, the one pushing REALLY hard. Nearly all of them are self-trained. School costs a LOT of money, and by the time you are done, much of your knowledge might be obsolete, and also there's no guarantee a certificate will get you into a graphics job. BUT, your portfolio surely will...! Good luck finding the right school, in the meantime do some drawings, a couple of watercolors, and toss 'em in your portfolio!