Please make the changes (correct the sentences and grammar, if reqd.) in this simple Composition/passage on "My School":

My school name is Keshav Memorial High School. I am a V class student of this school. In my school there is more than 50 teachers, 5 Ayahs and Office staff. Everyone is doing hard work to maintain the school. I have many extra curricular activities in my school. I am enjoying my studies and obeying my teachers as well and my school is a temple of knowledge.