The Environmental Education Resource Guides have been correlated with national and state academic standards.  All appear as pdf files:

• PA Academic Standards Correlated with the ERGs
• PA Academic Standards and activity ideas
• National Science Standards for Grades K-4 Correlated with the Nonpoint Source Pollution Prevention ERG 
• National Science Standards for Grades 5-8 Correlated with the Nonpoint Source Pollution Prevention ERG 
• National Science Standards for Grades 9-12 Correlated with the Nonpoint Source Pollution Prevention ERG