Definitions for "Scale score"
A score, derived from student responses to the NAEP assessment items that summarizes the overall level of performance attained by that student. NAEP subject area scores are typically expressed on 0-500 (reading, mathematics, history, and geography) or 0-300 (science, writing, and civics) scales. When used in conjunction with interpretive aids, such as item maps, they provide information about what a particular aggregate of students in the population knows and can do.
Underlying score from which all other scores are calculated; on the CTBS the scale score is a range of 100-999 representing a continuum from kindergarten through grade 12; as a child gets older, the scale score should be going up to represent growth in learning.
a conversion of the number of correctly answered questions (the raw score )