I like this video from Dan Willingham. It makes clear that if we don't teach students a broad range of things, they can never grow. Education is broad when we are young, and gets more specific as we get older. Little kids don't really need to know how to find the topic sentence. They need to understand how the world works, and to do that, they need lots of information; they do not need to focus on strategies. When will folks realize that being well rounded is necessary to becoming an expert in anything?