An active clearance is one in which the candidate is presently eligible for access to classified information. A current clearance is one in which a candidate has been determined eligible for access to classified information but is not currently eligible without a reinstatement.
The NCTM Standards evolved over several years, beginning with the 1980 report An Agenda for Action (NCTM, 1980), an important precursor to the NCTM Standards documents. A set of events and circumstances took place in the 1980s that spurred the need for standards and for national direction in mathematics education.
As a voluntary organization, ASTM International has no role in requiring enforcement of or compliance with its standards. Moreover, the American National Standards Institute (ANSI) is recognized as the primary developer of technological standards in the United States. However, many municipal, state and federal governments in the U.S. and around the world, as well as corporate entities, abide by ASTM standards.