If you depend on others for general knowledge you are lost. Blaming the school for it is just plain idiotic. There are many sources you can learn from if you show initiative.
What you can blame the school for is being inefficient at what they are teaching. School is meant to prepare you for life in regards to academics. It is not supposed to teach you how to live your every day life. That's what your family, friends and common sense are for.

What schools in my country are lacking is teaching efficient methods of learning and the basics behind the scientific method. Those should be taught from a very early age on so children have the mental tools necessary to acquire knowledge on their own.