Classic example for students of different age groups:-
1st to 3rd stndard- hey i studied everything for exam...
4th to 6th std- hey that question was very hard so i dint read tat...
6th to 10th std- hey read only important questions...
10th to 11th std- hey.. 4 chapters are enough....
12th- which exam is 2day...
colleges- ohh! today is exam... no one has inform me ..!