How do you write a 6 page essay?

Start by brainstorming the ideas you're going to include in your essay. You'll probably be given a topic by your teacher, or a choice of topics, so do your homework and look up lots of information about that topic so you have ideas to write about.

Now, make each of your points into a paragraph by adding explanation or further evidence or opinions, depending on what sort of essay it is.

Once you have at least 5 pages of paragraphs, write your introductory paragraph telling what the essay is to be about, and your conclusion summarizing the essay's main points. That will take you to 6 pages.