Psychometric properties of the School Leader Practice Survey (SLPS) to determine Missouri school superintendent perceptions about Interstate School Leaders Licensure Consortium (ISLLC) standards performance indicators

Abstract

The study of Missouri superintendent perceptions about the Interstate School Leaders Licensure Consortium (ISLLC) Standards Performance Indicators was conducted to determine psychometric properties of the School Leaders Practice Survey (SLPS). The SLPS was sent to 524 Missouri school superintendents practicing during the 2006-2007 school year of which 73 agreed to complete the survey. Factor analysis and Cronbach's alpha were applied to investigate properties of reliability and validity. Conclusions indicated the instrument was reliable and valid. Principal component analysis yielded three components confirming leadership focused on learning: (a) Ethical Leadership for Learning, (b) Management of Learning, and (c) Culture to Support Learning. A data reduction process produced a refined form of the SLPS, which was also deemed reliable and valid.