Children's biometric data secure for their lifetime?

Over on Andy Clymer's blog he raises concerns of how children's biometric in schools may not be secure, even for their time at school.

"...a responsible biometric manufacture would secure biometric data as best they can today, but once the software has been deployed if that data is to be truly secure it needs have sufficient physical security measures in place provided by the owner to ensure that in the future the encryption based solution still has adequate merits, the moment you do not have complete ownership of the data all bets are off...and by their own admission the biometric provider in this case said their guarantees is for appx. 10 years, in the case of biometric data for kids that data is sensitive for 60-70 years."