Mark Twain Elementary School is also listed under the following categories: Standard Yellow Pages Heading (SYPH) Categories:

• Government Offices
• School Elementary & Grammar

North American Industry Classification System (NAICS) Categories:

• Elementary And Secondary Schools > Schools, Elementary & Secondary, Public > Public Elementary Schools
• Executive Offices

Standard Industry Classification (SIC) Categories:

• Elementary And Secondary Schools > Schools, Elementary & Secondary, Nec
• Executive Offices