That is the way of it - an HVAC/R tech school isn't like a truck driving tech school. That can teach you everything required to drive a truck except maybe for the self-discipline. But HVAC/R is such a big, wide, and deep field that all a tech school can do is to give you a decent foundation in the basic fundamental building-block concepts to apply. In this business you will never stop learning. Of course you won't be bored either.