Rasch Analysis of the Teachers' Knowledge and Use of Data and Assessment (tKUDA) Measure.

Teachers are expected to use data and assessments to drive their instruction. This is accomplished at a classroom level via the assessment process. The teachers Knowledge and Use of Data and Assessment (tKUDA) measure was created to capture teachers' knowledge and use of this assessment process. This paper explores the measure's utility using Rasch analysis. Evidence of reliability and validity was seen for both knowledge and use factors. Scale was used as expected and item analyses demonstrates good spread with a few items identified for future revision. Item difficulty and results are connected back to literature. Findings support use of this measure to identify teachers' knowledge and use of data and assessment in classroom practice.