Our substitute positions are not filled through Substitute Teacher Service (STS). This allows our substitutes to work directly with our school district, creating personal relationships. To submit your application to substitute in Hempfield schools, please click here.We have a continuous need for substitute teachers during the school year. Because this need arises across all curricular areas, substitute teachers in all subjects and grade levels are necessary. It is our obligation, whenever possible, to assign a person certified in the subject area to be taught.