This paper introduces anthropologists to simultaneous equation models and to a powerful technique for estimating such models. Characteristically a simultaneous equations model consists of more than one equation and allows for interaction and joint determinancies between some of the variables. Basically these models apply to situations in which one variable depends on another variable, which, in turn, depends on the first variable. These formulations model feedbacks. Section II of this report concerns the methodology and results of the Equality of Educational Opportunity Report (EEOR), which is used to demonstrate the use of simultaneous equations models in the social sciences. Section III argues that the single equation models are inappropriate formulations of the educational process. It is argued that simultaneous equations should model the process. If the construction and estimation of a simultaneous equations model succeeds, then the results of estimating the model by a single equation may be biased and inconsistent. Consistency is an important property of an estimator. It means that as the sample size increases, the coefficient estimates tend to be the true parameter values. Using EEOR data, the estimates for the simultaneous equations model for blacks and whites are presented in Section IV. Finally, it is shown that these results differ from those obtained previously. (Author/RC)