Item Response Theory models were used to calibrate the high school assessments. In the calibrations, blank responses were treated as incorrect responses. Selected response items were scaled using a three-parameter logistic model (3PL). Constructed response items were scaled with a two-parameter partial credit (2PPC) model. A brief explanation of the models can be found in Maryland High School Assessment Program 2003 Technical Report (February 29, 2004 CTB/McGraw-Hill).

Included in Chapter 6 are the following two related reports.

6.1 Equating the 2002 Maryland High School Assessments

This one-page summary describes the procedure of calibration and equating following the 2002 administration of the high school assessments.

6.2 Summaries of Methods and Procedures for Calibrating, Equating, and Scoring the 2003 Maryland High School Assessments

This is a 10-page, detailed summary of the calibration and equating procedures used following the 2003 administration of the high school assessments.