This site from the National Center for Educational Statistics, gives "the correct name, address, telephone number, NCES ID number, urbanicity (rural, large city, etc.), and other student and teacher information for public schools or school districts.
St. Louis Area Districts
The following links provide information about elementary, middle, and high schools within the St. Louis Metro area and the state of Missouri.
Lists all public school districts in Missouri along with information about that district including names of district schools, superintendents, principals, and school board members; contact information, and statistics such as enrollment and number of certified staff.