he Ridge and Valley Charter School is a free public elementary school in Northern Warren County for children in the K-8 age group. The school is based on themes of Earth literacy, sustainability, experiential outdoor education and child-centered learning. Enrollment is open to any child in New Jersey, with preference for students from the school's sending districts of Blairstown, Frelinghuysen, Hardwick, Knowlton and North Warren Regional. We are located at 1234 Route 94, Blairstown, NJ.