Many companies now have you review yourself first and then you submit to your manager. Your manager then reviews you based on the same criteria and the two of you sit down and see how close you are in the evaluation process. Sometimes it can be way off …or it can be “spot on.” Usually it is somewhere in the middle.
If you strongly believe that your scoring in a certain area is unfair then explain to your manager the reasons why. Don’t be afraid to speak up but be calm and make your point without overstating it. Also remember your manager is looking at it from their perspective and many times they have valid points to bring to the table. So talk it over and see if the two of you can’t reach a reasonable solution. You may not always get the review you were looking for but no one is perfect. There is always room for improvement and new methods to learn.
Pick your battles and talk it out with your manager ... that way there will be no tension and you will have “cleared the air.”
Let me know how you feel about the review process!