Chalcedon

Chalcedon is also listed under the following categories: Standard Yellow Pages Heading (SYPH) Categories:

• Foundations Educational Philanthropic Research
• School Preschool & Kindergarten

North American Industry Classification System (NAICS) Categories:

• Research And Development In The Social Sciences And Humanities > Noncommercial Social Research Organization > Foundations Educational Philanthropic Research
• Elementary And Secondary Schools > Schools, Academic Preschools & Kindergartens

Standard Industry Classification (SIC) Categories:

• Elementary And Secondary Schools > Schools, Academic Preschools & Kindergartens
• Noncommercial Research Organizations > Noncommercial Social Research Organization > Foundations Educational Philanthropic Research