iOS 4.2 for iPad offers extensive parental controls so that you can limit or block access to Safari, YouTube, iTunes, Mail, etc. Using parental controls, you ca

iOS 4.2 for iPad offers extensive parental controls so that you can limit or block access to Safari, YouTube, iTunes, Mail, etc. Using parental controls, you can also prevent deletion or installation of third party apps. More information: http://knol.google.com/k/suren-ramasubbu/how-to-setup-parental-controls-on-ipad/2hrtmvjs09ng1/8 http://knol.google.com/k/suren-ramasubbu/how-to-setup-parent... http://www.apple.com/support/ipad/enterprise/ http://www.apple.com/support/ipad/enterprise/ There are also third party solutions for managing iPads, like this one: http://www.zenprise.com/solutions/iphone_management/ http://www.zenprise.com/solutions/iphone_management/ As for temporary disabling of Internet access in the classroom: purchase WiFi iPads instead of 3G iPads. Set up the students' wireless network using MAC-based authentication, then you can disable Internet access to groups of users at will.