LUKE: Me? Oh, no, I’m not the one you want helping him. I went to this school – I’m sure there’s still a note stuffed in there about me with the words ‘trade school’ stamped in really big letters.
Trade school is a term in the US for a vocational college, technical school, or technical college, offering training in skills for specific job or career. In the US, they are government owned or supported, and require two years of study to fulfil requirements; they can sometimes replace the final two years of schooling. The number of such trade schools is declining significantly, but even so Luke would have had the choice of more than a dozen trade schools in Connecticut if he had wanted to attend one.