What is a Parents Job?

Where is the line between learning information at home and learning information at school drawn?

     My 5 yr old son came home the other day and said, "mild-not too hot and not too cold". I asked him where he learned that and he said school. I immediately thought why haven't I taught him that? Did it just not come up yet? Is it my job as a parent to teach my son the meaning of words, aka vocabulary? Seems that is something he should learn at school, but what takes me off the hook? I birthed him.. I brought him into this world... Isn't my job to make sure he is prepared and ready for real life? 
     I believe the job of a parent isn't to just merely feed, clothe, and clean a child. There is so much more to raising a human being. We need so much more as a person. I'm not sure I'm capable of providing every aspect of life that he needs but it is my job to try. I will try to love him unconditionally even when he screams at me or doesn't listen for the 10th time. I will provide words of wisdom even when he thinks he knows everything. I will try to explain the world when something unexplainable happens such as losing a close friend or losing his chance at the president spot in his favorite club. 
     I will do this because it is my job, but also because I love this child more than anything else in this world. He is me. And if it's the greatest thing I ever do, I will try to be the best person for him and teach him things that I wasn't. I will be who he needs me to be even though I may not like it.