0 past simple and past participle of unsubscribe
1 to get an organization or business to remove your name from its mailing list so that you no longer receive email or post from them, or to remove someone's name from such a list
So the imbalance will lead to more and stronger preferences for the full schools and fewer for the unsubscribed schools.
It is used for anything where a user is tracked in both a subscribed and unsubscribed status.
