Si tu regardes les sites ci-dessous, tu verras qu'il semble que ce sont des règles qui s'appliquent souvent à la participation d'anciens élèves ou étudiants à des activités sportives, mais aussi à d'autres types d'activités.

"I don't have a degree from the University of Hawaii, therefore, I am not bound by the alumni rule, which obligates all who graduate from a school to cheer for their team until death."
http://blogs.honoluluadvertiser.com/index.php?blog=16&page=1...

"G. Alumni Rule:
Each team must, at all times, have at least 75% of the players on the field be alumni of that school. "
http://209.85.165.104/search?q=cache:ua1QV2kyKVMJ:www.dcalum...

"The alumni rule cap may have other, unintended consequences"
http://www.uscaa.org/natls/2002/ruleChangesFor2002.html

"There will be an enforced 75% alumni rule this year for each game and the post-season tournament. It will be expected that 75% of the players playing in each game will be alumni from the sponsoring university"
http://www.dcalum.org/sports/volleyball/VBInfo.cfm

"All such obits must be approved by the Class Secretary for publication - an Alumni rule, not ours"
www.usna.com/classes/1942/ThirdPage.htm


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Note added at 59 mins (2007-01-06 00:25:13 GMT)
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Etant donné que c'est un cours de comptabilité, peut-être que c'est à propos des règlements pour les cotisations des anciens etc. par exemple.