Saudi Arabia stipulated in July that no individuals under the age of 12 or over the age of 65 would be allowed to participate in this year's Hajj, due to swine flu concerns.

VOA: standard.2009.11.29

Tanzi, now 74, has been jailed since 2011 for his role in the scandal that defrauded thousands of small-time investors, despite arguments by his lawyer that his health is failing and that he should be granted house arrest under a law allowing it for convicts over age 70.

NPR: Knox Case Puts Italian Justice Under Scrutiny

The age of pupils can be another determining factor: under-age pupils are more likely to repeat a grade, while over-age pupils tend to leave school early.

UNESCO: MEDIA SERVICES

Starting in 2008, the only way that college students under age 24 will be able to avoid the kiddie tax is if they provide over half of their own support from their earned income (wages and salaries).

FORBES: The New Kiddie Tax