Colo. Rev. Stat. § 22-2-116.5
Beginning with the 2014-2015 school year, the department shall annually collect student-level course completion data, consistent with state and federal privacy laws, from each local education agency in the state. The department shall establish a definition of course completion that may be consistently understood and applied and that must be periodically revised as appropriate. In developing the definition, the department shall work with interested parties to consider issues, including but not limited to whether students should be included in the database if they have enrolled in a course after a specified date or dropped a course before a specified date and whether course completion must be determined based on the receipt of particular grades or other criteria.
C.R.S. § 22-2-116.5