Assessment of Chemistry Laboratory Classroom Environments

Abstract

The Science Laboratory Environment Inventory (SLEI) is a recently developed classroom environment instrument for assessing students' or teachers' perceptions of their science laboratory classroom environment. This paper describes its development and reports on the validation and application of its modified form, the Chemistry Laboratory Environment Inventory (CLEI), with a Singapore secondary school sample. The sample consisted of 1 592 final-year secondary school (i.e. tenth grade) chemistry students from 56 intact classes from 28 randomly selected co-educational government secondary schools in Singapore. Various item and factor analyses supported the reliability and validity of the instrument for assessing students' perceptions of their chemistry laboratory environment specifically in Singapore.