Pick a trucking company to work for before you pick a CDL school. Make sure you pick a trucking company where you can talk to current drivers doing the type of driving you will be hired to do. What would you think if someone in high school said they couldn't decide if they wanted to play baseball for the NY Yankees or football for the Dallas Cowboys so they were going to go to a very expensive athletic summer camp for "sports" and decide which sport later.
Have you checked ratings and/or reviews for that school that you found ? They may be just fine. But, there are a lot of shady outfits out there. Remember to ignore the best and the worst comments. Concentrate on the mass that are relative. This is your prospective career. We've seen it before. Tread carefully, and make the right choice. Jumping off a high dive with the hot chick at a rave party on Saturday night doesn't seem like the good idea on Sunday morning after you've done it... and she's usually not hot then, either.