How do you write an Essay?

<p>I get 5 or 6s on essays. No one told me exactly how to write them. They are all usually vague explanations when I ask. And I read Barrons and it was this confusing sentence structure thing that basically means you have to make it up during the test.</p>

<p>But I hear people memorize 80% of their essay beforehand and use memorized examples from books or something.</p>

<p>No one explains this stuff. Help</p>