Academic writing is the type of writing students are expected to produce in response to content they learn about in an academic setting; i.e. school. It's how they formally join the "scholarly conversation." Academic writing tells us what the writer thinks and what evidence has contributed to that thinking. The evidence can include the writer's personal experiences, information found in other books or sources, or information gleaned from talking with others (such as, a parent or expert). The standard for good academic writing is how logical or reasonable the writer's thinking is.