Twenty-five years ago, if someone wanted to continue their education after high school, but weren't inclined to attend a conventional college, they might enroll in a trade school. They'd learn shorthand, typing skills, or how to repair car engines and heating and air conditioners. Critics sometimes viewed trade schools as shady storefront 'diploma mills' handing out meaningless certificates along with an inferior education. But, over time, trade schools have morphed into career colleges, and as Les Lovoy reports they've gained a measure of respect .