Probability in the Measure of Achievement by George S. Ingebo, 1997
Shows the advantages of Rasch measurement for school district testing programs. Dr. George Ingebo contrasts the results of Rasch methods with conventional statistics for assessing student responses to basic skills testing. He presents testing issues in an accessible, down-to- earth manner.
Chapter I shows how the Rasch probability-based method produces measures that are more useful for students, parents, teachers, administrators and researchers than information provided by conventional population-based statistics.
Chapter 2 discusses the technology for designing and maintaining a large bank of curriculum test items that facilitate a reliable and precise measure of a student's ability growth between fall and spring and from year to year.
Chapter 3 presents a dozen research projects comparing conventional grade-level tests with Rasch calibrated levels-tests. Their findings support the use of the Rasch testing model. Chapter 4 offers a set of statistical comparisons of groups that can be useful to school district Administrators.
This book takes the uncertainty of student achievement testing out of the closet and looks it over on purpose - not with some comforting fiduciary limit, but with professional opinion backed up by wisdom and by a feeling of responsibility. 148 pp. Figs. ISBN 0-941938-09-3. LC# 97-076496.

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Coming Rasch-related Events
Feb 26 - June, 2018Online Advanced course in Rasch Measurement Theory (D.Andrich), University of Western Australia, Perth, Australia,
March 23, 2018, Fri.12th Annual UK Rasch User Group Meeting, Loughborough University, Loughborough, England,
April 10-12, 2018, Tues.-Thurs. Rasch Conference: IOMW, New York, NY,
April 13-17, 2018, Fri.-Tues. AERA, New York, NY,
May 22 - 24, 2018, Tues.-Thur. EALTA 2018 pre-conference workshop (Introduction to Rasch measurement using WINSTEPS and FACETS, Thomas Eckes & Frank Weiss-Motz),
May 25 - June 22, 2018, Fri.-Fri. On-line workshop: Practical Rasch Measurement - Core Topics (E. Smith, Winsteps),
June 27 - 29, 2018, Wed.-Fri. Measurement at the Crossroads: History, philosophy and sociology of measurement, Paris, France.,
June 29 - July 27, 2018, Fri.-Fri. On-line workshop: Practical Rasch Measurement - Further Topics (E. Smith, Winsteps),
July 25 - July 27, 2018, Wed.-Fri. Pacific-Rim Objective Measurement Symposium (PROMS), (Preconference workshops July 23-24, 2018) Fudan University, Shanghai, China "Applying Rasch Measurement in Language Assessment and across the Human Sciences",
July 29 - August 4, 2018 Vth International Summer School `Applied Psychometrics in Psychology and Education`, Institute of Education at the Higher School of Economics, St. Petersburg, Russia,
Aug. 10 - Sept. 7, 2018, Fri.-Fri. On-line workshop: Many-Facet Rasch Measurement (E. Smith, Facets),
Sept. 3 - 6, 2018, Mon.-Thurs. IMEKO World Congress, Belfast, Northern Ireland,
Oct. 12 - Nov. 9, 2018, Fri.-Fri. On-line workshop: Practical Rasch Measurement - Core Topics (E. Smith, Winsteps),