There is no doubt that children should start their study after the age of seven. Although some believe that they should start studying in their early age before 7. However I would argue that age of 7 is the best limitation for children to enter the world of education.
On the one hand, those who believe that child should start to study early may believe that the earlier they begin to study, the smarter they may become. However I would say that by this concept parents may put the child to under the more pressure. Moreover, later, children may not want to study because of more exposure to the education. As a result this may cause the loss of determination and desire of children to be educated. For example, Discover magazine reports that a research conducted in Utah proved that children who had been forced or started studying early experienced more brain diseases than the normal children.
In contrast, the age of 7 is a pretty good period to begin the studying. Till this period of time a child would have been taught some moral rules or else beginning levels of studying, such as alphabet or else numbers by parents. For example, parents could teach their children some fundamental basis of learning by playing some games in which does not make the child bored of studying.
In conclusion, as more exposure to study, especially in the early age of the child might cause some problems, loss of vigor to study and some mental diseases, I would support the latter idea that child should start studying after the 7 years of age. Moreover child could spend the period till this age playing with their friend and having a fun.