Subbing is an excellent way to gain experience, get exposure, learn new trends in technology and standards, and network as well. You can see jobs posted before the public has access. And the more assignments you take , the more admin/principals get to know you and they will definitely be seeking you out. Especially for long-term assignments, and most importantly - expanded classrooms due to enrollment. You are already there! I signed up for every district in my area, and it is a great way to keep steady income between jobs.