There are many measures of student perceptions of school climate; accordingly, there is a staggering amount of research examining those perceptions and related outcomes. There is a comparatively small number of measures examining school personnel perceptions. Of those found, only some had evidence of measurement invariance/equivalence (MI/E). None found with evidence of MI/E had evidence of structural invariance/equivalence (SI/E). This article explores these psychometric properties of The Georgia School Personnel Survey (GSPS) of school climate. We analyzed a representative sample of Georgia school personnel (N = 166,887) through exploratory, confirmatory, and multigroup confirmatory factor analysis. Results indicated that the GSPS has a second-order model containing six first-order subscales loading onto a second-order scale (acting as a measure of whole-school climate). Assessment of MI/E and SI/E suggested that the GSPS is an appropriate measure for comparisons based on gender, racial/ethnic identity, grade level, and job classification. Implications for research and practice will be discussed referencing the Cultural--Ecological Model of School Climate (CEMSC).