Schools in Castalia, Ohio, the US. Schools locations in Castalia, Ohio. Find the nearest schools locations, near you. All types of business services Accounting ATM Finance Funeral home Insurance Real estate School All schools in Castalia Firelands Christian Academy School +1 419-684-8642 3809 Maple Avenue, Castalia, Ohio 44824 Write a review Phone Website Directions Margaretta High School School +1 419-684-5351 209 Lowell Street, Castalia, Ohio 44824 Write a review Phone Website Directions