School and college where boys and girls study together are called co-educational. There are many co-educational institutions in our country. There are many arguments for and against co-education. Some are of the view that co-education is desirable at all stages of education, primary, secondary and at collegiate levels. Some are totally desirable at primary and collegiate levels and not at the secondary school level.The problem is linked with the aims and objectives set to be achieved at different levels of education and also with the roles the boys and girls have to play in a society later in their lives. However, it is agreed that at the primary stage of education it is desirable to have co-education. At this stage boys and girls are innocent. They like to play together, live together and learn together.The problem arises only at the secondary school level including +2 level. The boys and girls then enter the period of adolescence. Between the ages of 12 and 18 years, their rapid progress in physical growth. Their emotional changes too.Boys prefer to join a group of boys of their age. Girls prefer to move in their peer groups. Girls would like to attract the attention of boys and vice-versa. It is during the period that boys and girls prepare themselves to play their future roles as men and women.