Due to the high stakes that my be attached to placement decisions, it is imperative that the placement process be as solid and defensible as possible. An integral part of the placement process is the identification and use of cut scores, the point(s) on the score scale that classify students into adjacent categories for placement decisions. This…

Single equation regression models have been used rather extensively to test the effectiveness of Supplemental Instruction (SI). This approach, however, fails to account for the possibility that SI attendance and the outcome of SI attendance are jointly determined endogenous variables. Moreover, the standard approach fails to account for the fact…