A website my kids school use for maths advises it will stop worrying except for with Google Chrome, so I assume Google is keeping their flash implementation, and so flash will keep working.
That web site is wrong. The Flash player in Chrome will stop working on January 1st, and it will be removed from the browser entirely in an update early next year.
Adobe announced EOL a long time ago. January 12th is the day it will stop working, regardless of browser support.