Abstract: The research reported in the paper examines the effects of stress, marital status and ethnicity upon mental health of female school teachers. A 2x2x2 factorial design with three factors, each having two levels was used and ANOVA was applied for the analysis of data obtained from a stratified random sample of 304 female school teachers. General Health Questionnaire (GHQ) – 12 was used to measure mental health and stress was developed by Hassan (1982). Results reveal that out of three factors, namely stress, marital status and ethnicity, only ethnicity was found to produce main effect on mental health. Neither second order interaction nor third order interaction was found significant.