Up-to-date Chrome OS
100 MB RAM per extension
1.7 GHz+, Dual Core
Disk space 60 MB

Extensions are packaged with Native Client and require Native Client be installed and must have allow "permissions" to run. 

If the Chrome books are being managed by the district the extensions can be set in Forced - Install mode from the Device management section in the Google for Education Admin Console. See Chrome for Education Help for more details

The universal extensions do not run under public session mode.
The extensions are downloaded from the Chrome web store and are not developed as KIOSK Apps. 

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