Newer statistical procedures are typically introduced to help address the limitations of those already in practice or to deal with emerging research needs. Quantile regression (QR) is introduced in this paper as a relatively new methodology, which is intended to overcome some of the limitations of least squares mean regression (LMR). QR is more…

Test results are presented from the 11th year of the Arizona Pupil Achievement Testing Program, administered as mandated by the state legislature, which requires that a nationally standardized norm-referenced achievement test in reading, grammar, and mathematics be given to students in grades 2 through 11, with representative samples tested in…

Test results are presented for the Arizona Pupil Achievement Testing Program for fall 1991. In the 1991-92 school year, the state legislature mandated that only grades 4, 7, and 11 be tested. Although school districts could elect to test other grades, results in this report represent only tests for grades 4, 7, and 11 on either the Iowa Tests of…