Language programs need multiple test forms for secure administrations and effective placement decisions, but can they have confidence that scores on alternate test forms have the same meaning? In large-scale testing programs, various equating methods are available to ensure the comparability of forms. The choice of equating method is informed by…

Recently, Northwest Evaluation Association (NWEA) completed a study to connect the scale of the Minnesota Comprehensive Assessments (MCA) Testing Program used for Minnesota's mathematics and reading assessments with NWEA's RIT (Rasch Unit) scale. Information from the state assessments was used in a study to establish performance-level scores on…

Recently, the Northwest Evaluation Association (NWEA) completed a study to connect the scale of the North Carolina State End of Grade (EOG) Testing Program used for North Carolina's mathematics and reading assessments with NWEA's Rausch Interval Unit (RIT) scale. Information from the state assessments was used in a study to establish…

Operational testing programs employing item response theory (IRT) applications benefit from of the property of item parameter invariance whereby item parameter estimates obtained from one sample can be applied to other samples (when the underlying assumptions are satisfied). In theory, this feature allows for applications such as computer-adaptive…

This paper presents the characteristics, properties and development of the National Reference Scale for reading. This new scale is the result of a reanalysis of the Anchor Test Study data using Rasch model procedures, in an effort to produce equated scores among all reading tests included in that study. (Author/JKS)

The statistical parallelism of a pair of tests equated by the P-value method was investigated, as well as the relationship between their raw scores and scores transformed by linear equating. Data were obtained from eight sections of the 1980 New Jersey Minimum Basic Skills Program; specifically, the reading and mathematics tests for each of grades…

This paper is the first of a series that will compare estimates of error that arises when state assessments are linked to the National Assessment of Educational Progress (NAEP). Different forms of linkage are discussed. Comparisons are made between whole-sample regression, repeated half-sample replication, bootstrap, and jackknife estimates of the…

This Technical Report provides descriptions and summary data that assist measurement specialists in assessing the procedures used in developing New Jersey's High School Proficiency Test (HSPT), the technical qualities of the tests, and the statewide results obtained from its use. The data summarized in this report were collected during the various…

Two major issues are addressed in this commentary on the National Assessment of Educational Progress (NAEP) reading assessment: the design of the reading proficiency scale and interpretation of test data; and the dimensionality of this scale and the possibility of supplying data on specific skill dimensions. An examination of NAEP data and the…

A study involving all students taking the California Achievement Test (CAT) in the Cleveland City School District (Ohio) during the fall of 1989 was conducted to assess the effects of the use of parallel test forms. Each spring, all students in grades 4, 6, and 8 are selected to take the appropriate level of the CAT reading test, Form E. As a…

In spring 1986, new citywide testing programs in both reading and mathematics were implemented by the New York City Board of Education. In those cases where the test had changed, it was necessary to statistically equate the new tests to the old tests, so that comparisons of equated rather than actual scores could be made during the transitional…

The reading portion of the Michigan Educational Assessment Program (MEAP) was equated to the reading comprehension subtest of the Comprehensive Tests of Basic Skills (CTBS) using the Rasch Model. Both tests were administered to 366 low achieving fourth grade students. MEAP was treated as both a 95-item test and a 19-item (number of objectives…