medical assistant, no training???

hi, currently I'm still employed at a he88 hole of a nursing home. I am to the point of burn out, stressed, am feeling like I want to give up on nursing all together. You see a good day is 10 residents and bad day is about 17 to 30 some. I worked sunday and there are two halls. I took D and another girl took C and the third floated. This is daylight!!! we each were responsible for 18-20 residents until we got more help in the afternoon. Some nurses will help but many won't when they see you are overwhelmed and gee they actually have time to sit down and have um what do you call that a break! ( kidding) I am stressed, can't sleep at night, exhausted, back hurts frequently, headaches you name it. and they call me all the time at home, mandate people to stay over. I guess this is nursing. The unit I'm on is skilled so many of these people need everything done inc feeding them. And so I'm in LPN school, loving it by the way. A guy in my class is a MA and sais that they would hire me because I'm in nursing school. Now I've previously had multiple courses related to medical and nursing and training. He claims they'll teach me on the job. Is this even possible? if so I'm there cause i aint workin' here no more, they can take this job and shove it. They really need to focus on why they keep loosing staff and not just replacement.