Trucking school sending me for a "ride"?

I've decided a few weeks back to pay out of pocket for training, and I start within the week at a truck driving school. The cost total was just over $3K and it lasts for aproximately 3 weeks. Does this sound legit? Everything I have heard so far leads me to believe that the school is not a scam or a farm-out program. Have had some set backs finding employment. Had 3 out of my 6 aps. return so far with "We regret to tell you we are unable to offer a position at this time." A little frusterating, but I'm not out of hope yet, I'm not even thru school. But as I have less time to apply, I hope I'm not holding a CDL at the end of it with no where to go to when the music stops. I just want to do my part, be the best I can, learn from the experienced drivers and do it right. I'm not trying to be holy or anything, I just want to make a real go of it, and hang in there for the tough times I know are in the neighborhood being a rookie. Thanks you guys for taking time with us rooks, some of us are going to try real hard to make you proud.

-Midnight