Test development is a complicated process that demands examining various factors, one of them being writing items of varying difficulty. It is important to use items of a different range of difficulty to ensure that the test results accurately indicate the test-taker's abilities. Therefore, the factors affecting item difficulty should be defined,…

Recent methods have sought to improve precision in randomized controlled trials (RCTs) by utilizing data from large observational datasets for covariate adjustment. For example, consider an RCT aimed at evaluating a new algebra curriculum, in which a few dozen schools are randomly assigned to treatment (new curriculum) or control (standard…

The purpose of this research was to examine the relationship between State of Texas Assessments of Academic Readiness (STAAR) reading and academic progress in the programs of Istation and Star Renaissance (Star Ren) in fourth grade special education students. Special education students in the selected school district appear to produce inconsistent…