Substituting is a difficult job, no matter where you go. Adams 12 is a good culture for substitutes as there is never a day without an offer of an assignment. The only down side is, there is no guarantee of the types of assignment. If you request no middle schools, or do not want certain subjects, if there is no one else to take the assignments, they will call you regardless of your preferences. Advancing up their pay scale is very difficult and you must essentially work every day for seven months before advancing to the next pay level and it resets every year.
Create your own schedules