Your judging assignments are may by the judge coordinators based on your preferences (see Judge Info), background and the students that entered the fair.
If you are a judge and have logged in then you can view these lists:
You will be in these lists if you are a judge and have indicated that you will judge this year's fair. Assignments are made close to the fair so don't worry if you are in the list but have not been assigned yet. This is especially true for the Senior division judges because we try to balance the number of judges each student will see.
Note: Senior division judges are required to attend the Sunday and Monday judging sessions. Junior judging occurs on Sunday. Elementary judging occurs on Monday. Junior judges that can also attend the Monday session will judge the Elementary division as well.
If you are interesting in being a judge then check out Becoming A Judge. We can always use more and it is a very rewarding job.