Table A1.15-Number of years, projection methods, and smoothing constants used to project public school enrollments and high school graduates, by state
Projected state variable
Number of years (1970-1998)
Projection method
Smoothing constant
Choice of smoothing constant
Grade progression rates
29
Single exponential smoothing
0.4
Empirical research
Graduates/grade 12 enrollment
29
Single exponential smoothing
0.4
Empirical research
SOURCE: U.S. Department of Education, National Center for Education Statistics, National Elementary and Secondary Enrollment Model, and Higher Education Enrollment Model. (This table was prepared March 2000.)
