Another troubling factor is that past price movements are very poor predictors of the future. (investopedia.com)
While value - added data alone is a relatively poor predictor of teacher performance, the value - added estimate used next year is especially poor because it is not at all valid. (tnedreport.com)
The amount of stress you encounter is a surprisingly poor predictor of whether it will leave you worse (or better) off. (inc.com)