Study as I hope you have been doing during your schooling. Put your best into it but don't panic out. Take the test as soon as you can after finishing school. Don't wait thinking you can cram more into your brain. Don't go in thinking I can't do this. Don't listen to other people who have had bad experiences. Just go do your best.
When I took mine we were told the computer may cut off at 75 or 235 and that it was at random. Just because it cuts off at 75 does not mean you have passed just that your question level had stayed in the low percentile of questions. Mine cut off at 75. I paniced and I have never wanted a computer to come back on like I did that one. I started thinking about my questions and started counting the ones I though I got wrong. I could not remember driving home which was about 45 miles from where I live in a very big town with alot of traffic. I went home and started looking up things and just freaking out because I had gotten them wrong.
We had to wait about 3 weeks at that time for our results and we were told if it was a large envelope that meant failure and if regular meant we passed. I have never been so relieved to pull a regular envelope out of a mailbox in all my life.
I already had a job promise in the ER. I called the Director of the ER and told her and she put me on speaker phone and everyone was yelling congratulation to me. I went to work the next Monday, which was about 1 1/2 month after graduation and am still there.
You will be ok.