Preface | p. iii |
Figures | p. vii |
Tables | p. ix |
Summary | p. xi |
Acknowledgments | p. xv |
Introduction: the Importance of Grading Standards | p. 1 |
Research Questions | p. 2 |
Analytical Approach | p. 3 |
Organization of the Report | p. 3 |
Grade Inflation: Anecdotes and Systematic Evidence | p. 4 |
Grade Inflation in Secondary Schools | p. 4 |
Grade Inflation in Colleges and Universities | p. 6 |
Data and Methods | p. 7 |
High School and Beyond | p. 7 |
National Education Longitudinal Study | p. 8 |
Measures | p. 8 |
Student-Level Variables | p. 9 |
School-Level Variables | p. 13 |
Methods | p. 14 |
Sample Weighting | p. 14 |
Descriptive Analyses | p. 15 |
Multivariate Analyses | p. 16 |
Shifting Grades Over a Decade? a Descriptive Analysis | p. 18 |
Total Academic GPA | p. 18 |
GPA Changes by Subject | p. 22 |
Mathematics | p. 22 |
English | p. 24 |
Science | p. 24 |
Have Grades Become Inflated? Mathematics Grades in the Context of Tested Proficiency and Coursework | p. 27 |
Two Notions of Changing Standards | p. 27 |
Changes in Tested Proficiency | p. 28 |
Course-Taking and Its Relationships to Grades | p. 29 |
Changes in Mathematics Course-Taking from 1982 to 1992 | p. 30 |
Changes in Grades in Specific Mathematics Courses | p. 32 |
The Relationships Between Course Level and Grades | p. 33 |
Estimates of Grading Changes Independent of Scores and Coursework | p. 36 |
Correlation of Grades with Tested Proficiency | p. 37 |
Raw Shift in Grades | p. 37 |
Changes in Grades Holding Scores Constant | p. 37 |
Changes in Grades Holding Scores and Coursework Constant | p. 39 |
A Detailed Look at Predictors of Grades in 1982 and 1992 | p. 40 |
Influences on Grades in 1982 HSB | p. 41 |
Influences on Grades in 1992 NELS | p. 45 |
Discussion | p. 47 |
Appendix | |
Irt Scaling of Mathematics Test Scores, 1982 HSB Seniors and 1992 Nels Seniors | p. 51 |
Subsample Noncomparability | p. 57 |
Analysis of the Feasibility of Using Sat and Act Scores as Covariates | p. 63 |
Hierarchical Linear Models Used to Explore the Predictors of Grades | p. 71 |
Estimating and Adjusting For Reliability of the HSB and Nels Tests | p. 75 |
Bibliography | p. 79 |
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