Need information

Hey i'm new to this, and i'm wanting to get into the trucking industry. I have been approved with CRST to go to there truck school and get my CDL. I've been talking with my recruiter and she is really nice. I know dont trust recruiters and CRST sucks, i've read most of the threads.
I just have a question about how all this works. I mean how many people will I be going through school with?
Then how many people will I be going through orientation with?
And if I go through with 100 other people will they hire all 100 of us or just a couple of us? I mean if I go through this with 100 people next weak then that means theres probably about 100 students going through everyweek and I know they cant be hiring that many people every week?
I dont want to save my money and go up there for 3 weeks just to find out i'm not getting hired and now i'm stuck jobless and with a big bill. I've not lied on my application so if thats the only thing they could pit against me will I be alright or will they get rid of me for just about anything?
If anyone else on here has went through the training, about how much money do I need to bring with me?
Thanks for all the help and any advice is greatly appreciated...