The author has been discussed in this book perceptions' of secondary school teachers on geography, environmental science and computer education. He endeavour to introduce the geography and environmental science as separate subjects in secondary school curriculum and initiate the teacher's value of computer education and computer lab. He randomly choose 28 secondary schools of Ranga Reddy district of Andhra Pradesh, India and he selected five independent variables of teachers' like gender, age, educational qualifications, subject teaching and teaching experience and also three dependent variables. He finally adopted Chi-square technique and analysed the problem.