$34/hr wouldn't be subject to questions and complaints if most turned out a good product. Fact is, most do not teach the children adequately for any suitable purpose.
(Teaching the kids to be good global citizens doesn't qualify as suitable.)
Unlike a computer network all problems are not the same in education. You don't start out with a faulty switch and change it out. There are no magic programs. Sometime the circuits are bad and nothing can be done. A kid just can't be replaced. It's not 1's and 0's each one is an individual and often has problems at home that the teacher can't control. These are children not buggy whips or parts made on a CNC lathe. To compare a child with a product shows a vast ignorance of teaching and of human development.