This paper reports the reanalysis of data collected in a study of 3 determinants of classroom environment (viz. year level, subject, and school type) using multivariate analysis of variance and multilevel analysis. Data were collected from 2,211 students in Queensland Catholic and government schools. The Catholic School Classroom Environment Questionnaire, which assesses student affiliation, interactions, cooperation, task orientation, order and organisation, individualisation, and teacher control, was administered to the sample. The original multivariate analyses which used the class as the unit of analysis were supplemented by similar analyses using the student as the unit of analysis and multilevel analyses. While multilevel analyses yielded tests of significance results similar to multivariate analyses conducted with the class as the unit of analysis, effect sizes for the multilevel analyses were similar to those reported for multivariate tests conducted with the student as the unit of analysis. (Contains 4 tables.)