How to Score 100% Marks in exams

Why Children are Treated Worse then Jail Convicts   There are 24 hours in a day. A healthy Child should get 8 to 10 hours of sleep for Good Health.   Are children getting 8 hours of sound sleep these days.   I do not think so.   Children in Metros   8-10 hours sleep. 6 Hours school time. 6 to 8 different subjects to study each day. Subject changes is most punishing...