Validating and Testing the Teacher Self-Efficacy (TSE) Scale in Drug Education among Secondary School Teachers

Teacher self-efficacy (TSE) in drug education is critical because it is linked to teachers’ beliefs and ability to deliver learning material about drug abuse to students. There is scant literature about TSE in drug education. This might be due to the lack of valid instruments measuring TSE in drug education. This study aimed to validate and test the TSE Scale among secondary school teachers in drug education. The TSE Scale was adapted from the instrument of teacher efficacy by Tschannen-Moran and Hoy (2001). One hundred and thirteen public secondary school teachers in Johor, Malaysia were involved in this quantitative study. Cronbach’s alpha was used to examine the internal consistency and factor analysis through factor loading to confirm the items in each construct. The results reveal that the scale has internal consistency, with a Cronbach alpha value greater than .7. Furthermore, the factor loading results confirm the structure of the instrument, where each item had a factor loading greater than .5 and was loaded in each construct. Therefore, the TSE Scale is a valid tool to measure secondary school teacher self-efficacy in drug education. The instrument can be used in studies related to drug prevention activities in secondary schools.