• Report on state certification requirements for teachers of Latin - from the Joint Committee on Classics in American Education, a committee of the American Philological Association/Society for Classical Studies and the American Classical League.
• Guidelines for Latin Teacher Preparation - A Collaborative Project of The American Classical League and Society for Classical Studies (updated 2023).  A one-page quick guide can be found here.
• 1997 Standards for Classical Learning - A Collaborative Project of The American Classical League and The American Philological Association and Regional Classical Associations
• 2017 Standards for Classical Language Learning. The Standards have been approved by ACL and SCS governing boards.  When final production is completed, the DRAFT will be removed from the document. 
  The summary of the Standards for Classical Language Learning gives a good overview of the Standards. 
• The Classical Language Standards to align with the World-Readiness Standards for Learning Languages 
• Modern Language Association report on Enrollments in Languages Other Than English in United States Institutions of Higher Education
• The National K-12 Foreign Language Enrollment Survey Report  (2017)
• Seal of Biliteracy website

Address by Prof. Ken Kitchell, Professor Emeritus, University of Massachusetts Amherst, and past ACL President: Latin Teacher Training: Does it Have a Future Tense?