Learn Outside With The Chesapeake Bay Foundation. For more than 30 years, CBF's environmental education programs have been a cornerstone of CBF's efforts to improve water quality and the Bay's health. CBF's teacher professional development initiatives, student leadership program, and classroom curricula are designed to support state standards and help students Learn Outside. The application deadline for this year's programs is May 1. (click here to see how teachers and students can be part of the program.)