If you've ever wondered about rank in kendo, the general bottom line is that (achieving) rank is not the ultimate goal of kendo. The ultimate goal is just to get better at kendo. Perhaps you've noticed that no one in kendo wears any outward sign to denote their rank. Why?
When you go to practice, things like rank, age, sex, weight have no true meaning because in kendo, technique will determine the winner in a match. By way of illustration, at the U.S. National Tournament in Las Vegas (1999), I saw a 5'2, 100 lb girl defeat a 6'+, 200 lb man in the team competition by scoring a beautiful men. Technique is the variable which makes all kendoka "equal".
That said, rank (and achieving rank) can be a positive thing in kendo. It can give us a sense of where we are (in terms of kendo ability/knowledge) and where we're headed or what we can look forward to. In our goal-driven society, rank can be a source of encouragement as well.
Currently, Memphis Kendo holds in-dojo promotionals for the ranks of 8.kyu and 7.kyu. While there enough instructors with the rank required by the International Kendo Federation (FIK) to hold promotions to a higher rank, the current SEUSKF by-laws mandate that all members, for their first rank testing, must test for any rank below 1.kyu at an officially-organized regional federation testing. Consequently, our practice has been to promote only to 8.kyu and 7.kyu before encouraging a higher rank (normally either 4.kyu or 3.kyu) at any one of several testing opportunities available throughout the year.
The following link provides more information about general expectations at a promotional examination: http://beginningkendo.blogspot.com/2010/07/shinsa-rank-testing-expectations.html
So... should you worry about testing? The first testing can be a bit stressful because you want to do well. You know what the judges expect you to be able to do, but you may not know how well the judges expect you to do it! In the end, it's nothing to get worked up over. Some of you who may have experience in other martial arts may have heard, witnessed, or even participated in rank testings which have lasted several hours. This is simply not the case with kendo. At best, you may be on the floor in front of the panel for 5 or 10 minutes total. The jigeiko portion of your exam is supposed to last a total of 180 seconds (90 seconds per match). This obviously may add to your stress as you feel you don't have enough time to fully demonstrate what you can do. Promotional panels have a lot of experience, though, and have the ability to see your potential even when you're not "picture perfect". So, when you go in for testing, simply do what you know how to do and let the judges do their thing. No sense in worrying about it! Whether you hold a rank of 4.kyu or shodan, you'll always find yourself practicing and sparring people with more experience and higher rank. Anyone, of any rank, can score a point or win a match against anyone else on any given day.
Regardless of rank, kendo is an ongoing learning experience. You might consider using promotionals as an encouragement to better your kendo, but ultimately, rank is not the end-all/be-all of kendo.
Something to keep in mind....
Rank in Kendo