The research was focused on the “Leadership Behavior of Principals and Attitudes of Teachers as related to the Academic Environment in Private Secondary Schools of District Dera Ismail Khan”. The study was quantitative and data were collected using a survey. The population was 147 heads and 1470 teachers who were working in private secondary schools of the District, Dera Ismail Khan. A sample of 324 was selected for gathering data. The correlation, t-test, and regression were statistical analysis techniques. The results depicted that better academic environment is the result of positive attitude of teachers. The relationship between attitude and leadership behavior was highly positive. No differences were found between rural and urban on attitude scale, leadership behavior scale and environment scale.