Use of the Rasch model for vertical equating of tests is discussed. Although use of the model is promising, empirical results raise questions about the adequacy of the Rasch model. Latent trait models with more parameters may be necessary. (JKS)

In considering the problem of measuring achievement for the evaluation of school effectiveness, there are at least three questions that need to be answered: (1) What is to be measured? (2) How is it to be measured? (3) How are the results to be analyzed? Following a discussion related to the first two questions--determining content objectives and…

The "Griggs vs. Duke Power" decision of the Supreme Court specifies that job relatedness is the only lawful reason for using tests for the purpose of selection when their use results in the disproportionate exclusion of minority group members. One of the main implications of the "Griggs" decision for the test producer and user…