This paper models the educational process by a system of simultaneous equations. The endogenous variables (educational outputs) are a pupil's achievement, participation in a college preparatory program, need for achievement (aspirations), demonstrated motivation (effort), expectations, self-esteem, belief in his ability to control his environment…

Missouri requires the testing of all eighth grade students on their competence in reading and language arts, mathematics, and government and economics. This statewide assessment is referred to as the Missouri Basic Essential Skills Test (BEST) and has been given in the spring of each year since 1978. A study was undertaken to determine which…