Two things please. #1 "Well, Good news. I went to the RMV and passed my CDL A test the first time around."
Since he has passed the test, why go to school?.
That's one even I know the answer to.
Just studying a DMV manual and driving some truck for a day or two to learn how to "Pass" the CDL test does not make one a truck driver.
Sure, anyone that is book smart and a quick learner can pass any kind of driving test within their comfort zone, but what happens when they get out of their comfort zone in an 80K lb truck are put in a situation where an obstacle they have never encountered comes about? Truck Driving schools are not there to teach CDL rules and regulations only, they also concentrate on real world driving that covers obstacles that drivers may run across all over the country.
I just went thru this same question last week on another board I'm on. Let's say you have a Guy that lives in "Lubbock Texas" who goes down and does exactly what this guy did. Got the CDL book, studied, passed all paper tests that were given and then borrowed a truck to take the driving test and passed that too. He is now a licensed CDL driver that has never seen a hill higher than 200 feet high and has been driving flat lands all his life.
Now, take this same driver and throw him in an 80K lb, 65ft long, 14ft high truck and send him out away from his "Comfort Zone" all on his own. I guarentee you the first time he takes that I-80 Eastbound drop into Salt Lake City in that truck, he's going to wish that he had "Gone to School" to know exactly what the hell to do to get down that butt puckering mountain in that truck safely. Or the first time he hits New York or New Jersey and has to back up 3 blocks with 2 feet of clearence on both sides of his truck to get out the jam he just got him and his truck into.
That's why you see ALL of the big companies out there say "2 years experience" OR "RECENT truck driving school graduate" within their hiring requirements.
Hope this helps.