Many of the analytical models commonly used in educational research often aim to maximize explained variance and identify variable importance within models. These models are useful for understanding general ideas and trends, but give limited insight into the individuals within said models. Data envelopment analysis (DEA), is a method rooted in…

The relationship of teachers' allocation of time to individual student achievement was studied. It was concluded that teachers prefer to increase students' average achievement rather than to decrease the variance in achievement within the classroom. (MH)