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Download full textWoodruff, David; Traynor, Anne; Cui, Zhongmin; Fang, Yu – ACT, Inc., 2013
Professional standards for educational testing recommend that both the overall standard error of measurement and the conditional standard error of measurement (CSEM) be computed on the score scale used to report scores to examinees. Several methods have been developed to compute scale score CSEMs. This paper compares three methods, based on…
Descriptors: Comparative Analysis, Error of Measurement, Scores, Scaling
Kang, Taehoon; Chen, Troy T. – ACT, Inc., 2007
Orlando and Thissen (2000, 2003) proposed an item-fit index, S-X[superscript 2], for dichotomous item response theory (IRT) models, which has performed better than traditional item-fit statistics such as Yen's (1981) Q[subscript 1] and McKinley and Mill's (1985) G[superscript 2]. This study extends the utility of S-X[superscript 2] to polytomous…
Descriptors: Item Response Theory, Models, Computer Software, Statistical Analysis
ACT, Inc., 2012
Last year, Hispanic and African American high school graduates met ACT's College Readiness Benchmarks in English, reading, mathematics, and science at substantially lower rates than did Asian and White graduates. For example, the rate of White graduates who were college ready in English (77%) was twice that of their African American peers (35%).…
Descriptors: Achievement Gap, Racial Differences, Ethnic Groups, Academic Achievement
ACT, Inc., 2009
As part of its College Readiness System, ACT offers the PLAN[R] program as a way for tenth-grade students to review their progress toward college readiness while there is still time to make necessary interventions. PLAN contains four tests--English, Mathematics, Reading, and Science. These tests are designed to measure students' curriculum-related…
Descriptors: Grade 10, Correlation, Alignment (Education), Predictor Variables
ACT, Inc., 2008
ACT is often asked whether student scores on the ACT[R] test can be used to make "norm-referenced" or "standards-referenced" comparisons. Norm-referenced interpretations compare students to one another, while standards-referenced interpretations measure student performance against predefined content standards. This brief shows…
Descriptors: College Entrance Examinations, Educational Assessment, Student Evaluation, Academic Standards
ACT, Inc., 2009
It is essential for all students to be ready for college and career when they graduate from high school. Postsecondary educators expect high school graduates to be prepared academically for success in postsecondary education, which in turn influences success in the work world. Employers continue to call for workers to have the tools needed to…
Descriptors: Job Satisfaction, Career Choice, Academic Achievement, High School Graduates
ACT, Inc., 2007
End-of-course examinations are only as good as the assumptions used in designing them. What is a course's "essential" content? And what does it mean to master it? The end-of-course examinations developed by ACT are derived from assumptions that offer unique and challenging answers to these questions. This brief explains the process used to develop…
Descriptors: Test Content, Course Objectives, Test Construction, Readiness
