So I happen to be in jazz band for my high school. I'm in a class where there are actually 2 combos at the same time. So, I play every other day, and when I'm not in the jazz room, I'm in the main room with our director. So at the beginning of the year he told us he wouldn't get in the way, since he doesn't know much about jazz, and he would have a senior in the top combo help us instead. But the senior is in the jazz room daily and not with us when we aren't in the jazz room. Our school also just so happens to be crack poor (since our freaking director bought an ipad with band money) so we only have 1 amp for bass (and its a keyboard amp). I live far away from my school, so I can't just bring my amp, ((it will get stolen) and its not convienent) so whenever I'm in the main room, I have no amp. He wants me to practice walking basslines, but I can't really do squat, (btw, all the horns are in this room, so I can barely hear myself think). he basicly took over, even though he knows nothing, and is dictating what we practice. The only thing I can (and actually need to) practice is slap, since we play some funk too. But no, he wants me to practice major scales and minor scales and walking the bass (I knew these things for years). what should I do?