In "The Marks of Maturity" they show an example of a butterfly. If a parent butterfly is trying to help their child to come out of their caccoon before it is ready, they will discover that they actually did a bad thing and the butterfly can not fly by itself yet. Children need to take the time they need to process the things that they are learning in order to fully understand, and become mature and prepared. If they do not take this much needed time to really grow and develope, they may not know how to handle real life situations by themselves or how to make wise decisions because their brain was never given the chance to do it by itself.
In teenage years, the teen's brain is going through a "self-pruning". What is happening during this is that the brain is trying to transform into an adult brain. During this inbetween stage, their level of reasoning will not be fully mature. In this time of their life, they will be informed, but not necassarily be prepared because the brain can not fully process the things the teen has learned. It will take awhile for the brain to be fully done "pruning", and this usually happens around the student's early