| Table A-13. Number of years, projection methods, and smoothing constants used to project state-level public school enrollments and high school graduates |
|---|
| Projected state variable | Number of years (1972–2006) | Projection method | Smoothing constant |
Basis for smoothing constant | |||
|---|---|---|---|---|---|---|---|
| Grade progression rates | 34 | Single exponential smoothing | 0.4 | Empirical research | |||
| Graduates divided by grade 12 enrollment | 34 | Single exponential smoothing | 0.4 | Empirical research | |||
| SOURCE: U.S. Department of Education, National Center for Education Statistics, State Public Elementary and Secondary Enrollment Model, 1972–2006; and State Public High School Graduates Model, 1972–73 through 2005–06. (This table was prepared November 2008.) |
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