Percentile scores appear to be the easiest standardized test scores for parents to understand. Yet in this true-false test, Hills reveals commonly held misconceptions about percentile score reports. (LC)

This National Council on Measurement in Education (NCME) module is designed to help teachers understand test reliability requirements. Focus is on the reliability of scores from teacher-made achievement tests used for interpreting norm-referenced scores. Reliability, factors affecting scores, reliability estimation methods, reliability's relation…

The unfulfilled promise of criterion-referenced measurement is that it would permit valid inferences about what a student could and could not do. To come closest to achieving all that criterion-referenced testing originally promised, tests of higher item density, with more items per amount of domain, are required. (SLD)

Means of interpreting norm-referenced tests to lead to more accurate reporting results are discussed, with particular emphasis on state-level and district-level data. Suggestions fall into the categories of documentation, frequency norming, and multiple form use. (TJH)

The term "criterion-referenced measurement" has been so frequently used that accumulated surplus meaning has sometimes swamped the fundamental concept. Stripping away extraneous interpretations affirms the contemporary relevance of the concept. Substituting the term "construct-referenced" underscores the need for better…

The instructional impact of criterion-referenced testing during the past three decades is reviewed, and a method of devising criterion-referenced tests is suggested that departs from the usual model. Adding verification along the lines of panel review that newly constructed test items do elicit appropriate information is suggested. (SLD)

In response to J. J. Cannell's (1988) discussion of the reported "above average" achievement of the vast majority of public school systems nationwide, the nature of national norms is discussed. The public must be better informed about the interpretation of test results. (SLD)

The developer of the Comprehensive Tests of Basic Skills scaling responds to Hoover's attacks on Thurstone and item response theory scales (TM 510 173). While agreeing that grade equivalent (GE) scores are presently the most appropriate developmental score for reporting elementary grade achievement tests, limitations and inconsistencies in the GE…

Grade equivalent (GE) scores for elementary school achievement tests are defended in response to efforts to ban their use. Equal interval developmental scoring methods for the Sequential Tests of Educational Progress and the Comprehensive Tests of Basic Skills are criticized. (BS)

Cohen and Hyman's response contains several misunderstandings of the original article by Mehrens and Kaminski. One frequently wishes to make inferences to a domain from a test, but teaching a specific performance and testing for that performance does not allow for a domain inference. (SLD)

The author addresses issues raised by Burket (TM 510 174) about the Iowa Test of Basic Skills scaling procedures. Further reasons for his criticism of Thurstone scale scores and item response theory scale scores for elementary school achievement tests are given. (BS)

A sample (N=37) of currently published achievement tests was surveyed as to the availability of five types of technical data: (1) item selection techniques; (2) standardization; (3) types of norms; (4) types of validating data; and (5) types of reliability data. Recommendations for publishers and cautions for test users are given. (BS)

Results of a 1987 report indicating that elementary students of all states were above the national average are assessed. Issues addressed include teaching for standardized tests, the effect of teaching on national norms, and alternatives available to protect the integrity of instruction and the validity of normed test scores. (TJH)

In 1987, a survey report by J. Cannell was published criticizing state reports based on national standardized testing of elementary school students that indicated that all 50 states were above the national average. This phenomenon--known as the "Lake Wobegon Effect"--is analyzed. Technical problems with the study are considered. (TJH)

Results of a 1987 report--indicating that elementary students of all 50 states were above the national average--were assessed via 2 national mail and telephone surveys. Although results of data for 35 states support the general findings of the 1987 report, it appears that more specific results are less sensational. (TJH)