St. Mary's School Sycamore EducationChurches St. Mary's School Sycamore Visit Website 322 Waterman Street Sycamore, IL 60178 (815) 895-3275 (815) 895-4561 (fax) Facebook About About St. Mary's Catholic School has been providing excellence in education, spiritual formation and a commitment to serve others for students in preschool through Grade 8 in Sycamore and surrounding communities for nearly 100 years.