The purpose of this research was to develop the Caring School Leadership Questionnaire (CSLQ) as a valid and reliable instrument to measure the extent of care being given by school leaders (principals) to teachers. The research involved 1,041 teachers and 65 principals from 68 primary schools in the North-West Province of South Africa. The construct validity of the CSLQ was determined by means of a confirmatory factor analysis. The three main constructs regarding caring that emerged from the factor analysis proved to be the same as those theoretically identified as the three main determinants of care. Cronbach's Alpha coefficients furthermore proved the CSLQ to be reliable. The key finding flowing from the investigation was that the CSLQ may be applied with good effect in 180º-, 360º-, as well as self-evaluations of school leaders.