The alternate assessment based on modified achievement standards (AA-MAS)was an assessment that some states used to evaluate the performance of a small group of students with disabilities whose progress in response to appropriate instruction made it unlikely that they would achieve grade-level proficiency within the school year covered by the Individualized Education Program (IEP).
This assessment option is no longer allowed. Final regulations that formally ended the use of the AA-MAS were issued in the Federal Register on August 21, 2015. The reauthorization of the Elementary and Secondary Education Act as the Every Student Succeeds Act (ESSA) in December 2015 confirmed that an AA-MAS could not be used as a Title I assessment, nor could it be used for Title I accountability.
Information about the AA-MAS, as well as resources for states that are transitioning away from this assessment, are available at: Successfully Transitioning Away from the 2% Assessment
For additional information about the AA-MAS see Policy History