I've been substituting for two years now, and in that time I've been applying for full-time positions. My work calender is normally very full (I've six days schedualed this month, and teachers came back the day before yesterday). I've interviewed four times with no luck. I'm certainly not blackballed, because I get a ton of work, but I've gotten no job offers. My question is this: is it possible that a district would rather keep a good sub than make him/her a full-time teacher and lose a substitute?