This leads to people taking the easy way out and just memorizing everything without understanding or thinking critically about what they are doing. These people aren't thinking for themselves and instead are just taking everything told to them as fact and regurgitating it when they are asked. This obviously leads to a problem when they become adults and need to make decisions on who is to lead them. Instead of coming to their own conclusion they will listen to their parents, preacher, neighbor, etc. All of whom might have come to their conclusion of who is the best leader faultily.
In Addition: Just to give you guys an example of where this is being most blatantly done, literature classes. I remember in my lit classes that almost 90% of the class did not read the book. Instead they just took the spark notes and memorized key points taking nothing out of the text. As soon as the exam was over they forgot everything.