The best way to prepare for that final assessment at the end of a school year or semester, is to start preparing from the very beginning. If it’s already the end of the year and you need to hand in your final assessment soon, your best option would honestly be to make use of affordable papers.
But if you’re not that pressed for time, you can still keep affordable papers as your plan B. Plan A is to study, study, study. Set up a study timetable that breaks up the work into small sections that you can complete every day. This way, there will never be a day that you spend hours sitting in front of the books, but instead a lot of days where you spend at most two hours studying. This will also create the habit of working everyday, which is something that is crucial during school, university and just about any job you can do. Self discipline is ultimately more important that any natural talent you have in any field.
When you work out your timetable, try and have all the work studied and under the belt at least two weeks before your final assessment. This way, you have time to revise and to use your knowledge to write the best assessment you possibly can. If you finish studying on the day that it is due, all your work will be for nought since you’ll be so rushed and stressed out that you don’t give your all and just try and work against the clock. The sooner you start working on that final assessment, the better it will be because you’ll have time to think it over and make edits as necessary.