Less seat time

States have established an array of policies in recent years to free schools from having to award academic credits based on "seat time," with the goal of making it easier for struggling students to catch up, exceptional students to race ahead, and students facing geographic and scheduling barriers to take the courses they need.
Thirty-six states have adopted policies that allow districts or schools to provide credits based on students' proving proficiency in a subject, rather than the time they physically spend in a traditional classroom setting, according to the National Governors Association. One state, New Hampshire, has required high schools to assign credits based on competency, rather than seat time, while others have encouraged schools to do that or allowed them to apply for waivers from state policy to do so. (Sean Cavanagh at Education Week)