Substitute Teacher St. Clair County - Port Huron Schools, Algonac Schools, Capac Schools, East China Schools, Marysville Schools, Memphis Schools, and Yale Public Schools Are you ready to make an impact on education? Do you want to work for a company considered 1 of America's Best Large Employers of 2017 and 2018 by Forbes Magazine? A substitute teaching position with ESS may be the opportunity...