KB created this fabulous "formula". USE IT!
I'm pretty sure this can answer everyones questions pretty simply, unless I am figuring the math wrong
If your birthday is in January, February, March, April, May, June, July or August then do
(the year you were born) + 18 = equals the last year you can cheer
If your birthday is in September October November or December you would do
(the year you were born) + 19 = the last year you can cheer
The resulting year would be the beginning of the season so if you get 2013 your last year cheering would be the 2013-2014 season so for me since my birthday is September 1983 I would do
1983+19=2002
So by the current rules my last year of eligibility would have been the 2002-2003 season, which is correct because on August 31 2002 I was 18