He's in Montgomery County? His grandparents in Bowie must of gotten tired of him and he found someone else's couch to surf on.
I assume this means he's attending Montgomery College, which does offer a sprinkler fitting apprenticeship. (Prince George's County Community College also offers sprinkler fitting courses and it would be much cheaper for him to live there.) The community colleges in Maryland are the primary provider of GED programming. I assume he is on a path to complete his secondary education certification before actually participating in the apprenticeship. Usually apprenticeships require a test and other certifications to get in, especially union affiliated apprenticeships. I wonder if Steven is actually in the apprenticeship program or on a pre-apprenticeship track to qualify (he hopes).