Denver schools superintendent Michael Bennet introduced the last draft of the new policy, called the Denver Plan, in the spring of 2006. Bennet thinks his strategy will minimize the increasing afternoon truancy within the high schools.
http://waylontwax883.bravesites.com/entries/general/a-large-number-of-denver-institutions-to--shut-down-their-campuses--in-the-course-of--lunch