The present study is an attempt to examine the environmental awareness of secondary school teachers in relation to sex, type of board and courses of studies. For this purpose, 1000 teachers (600 female and 400 male) were selected from different schools affiliated to CBSE and U. P. Board. In this process of selection only those teachers were selected whose teaching experiences were not less than 8 years. For measuring environmental awareness self-made questioner was used, Mean SD and 't' value were used to analyse the data. The study will highlight the influence in type of school, sex and courses of studies on the level of teachers of environmental understanding.