it's always worse than you think, part 5

There is so little current interest in major learning gains in public schools, however, that we can't even get the standard celeration chart in wide use (Watkins, 1988).

source:
Precision Teaching's Unique Legacy from B. F. Skinner (pdf file)
Ogden R. Lindsley, Ph.D.
Journal of Behavioral Education
Vol. 1, No. 2, 1991 p. 259

This probably has something to do with the fact no one's ever heard of the things.