I guess you should find out about what they expect, but I doubt completism/canonism will matter much to anyone at that level (I suppose it might at the professorial level). I think it might be more useful to familiarize yourself with the more prominent critical debates so that you can break open whatever texts you're presented with in a few focused ways.
My hunch is that you'll get as much out of a text after one reading as the kiddies would after about sixteen, though they will likely have (intermittent) moments of unique insight (how's that for condescension?). Anyways, you'll be fine. Faking it is a not altogether unrespected skill among english teachers, i think. Books on education? meh. Just be affable and press your slacks. They'll never know.
― The Giant Mechanical Ant (The Giant Mechanical Ant), Sunday, 11 June 2006 13:26 (eighteen years ago)