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ERIC Number: ED455248
Record Type: Non-Journal
Publication Date: 2001-Apr-11
Pages: 22
Abstractor: N/A
Reference Count: N/A
Constructing a Universal Scale of High School Course Difficulty.
Bassiri, Dina; Schulz, E. Matthew
This study examined the usefulness of applying the Rasch rating scale model (D. Andrich, 1978) to high school grades. ACT Assessment test scores (English, Mathematics, Reading, and Science Reasoning) were used as "common items" to adjust for different grading standards in individual high school courses both within and across schools. This scaling approach yielded an ACT Assessment-adjusted high school grade point average (AA-HSGPA) that was comparable across schools, cohorts, and among students within the same school and cohort who took different courses. The AA-HSGPA was constructed for all ACT-tested students in 50 selected high schools. First-year college grades at a large midwestern public university were available for approximately 3,500 of these students. AA-HSGPA was a better predictor of first-year college grade point average (CGPA) than the regular high school grade point average (HSGPA). As expected, the regression of CGPA on HSGPA differed for high schools grouped by difficulty (easy or hard), but the regressions of CGPA on AA-HSGPA and the ACT Composite score did not. The best model for predicting CGPA included both the ACT Composite score and AA-HSGPA. (Contains 4 tables, 5 figures, and 22 references.) (Author/SLD)
Publication Type: Reports - Research; Speeches/Meeting Papers
Education Level: N/A
Audience: N/A
Language: English
Sponsor: N/A
Authoring Institution: N/A
Identifiers - Assessments and Surveys: ACT Assessment