The idea of attempting an A level coursework is to be rated among the better students in the class. Different types of essays require different treatment. When writing an essay in literature, you pay attention to grammar and language style. Science projects demand a different treatment wherein your concepts and fundamentals have to be clear.
Assessment of essays written specifically as A level coursework is more practical and follows a system that can gauge the competence level of a student. For example, an essay on the principles of motion in Physics would have to show an understanding of the principles, its application in an exercise, and usefulness to others. A student would be tested for his analytical skills and how he evaluates problems and uses superior skills of deduction to write the essay.