Schools that register for the special Bing project will earn credits through Bing Rewards. For every 30,000 credits earned, Microsoft will give the school a Surface RT with a Touch Cover.
According to Microsoft, it figures that it would take a group of about 60 students one month to accumulate enough credits. Larger schools certainly stand to gain quite a bit through this rewards program, making it possible for a school to earn maybe as many as 30 Surface tablets each month, or more. Bing Rewards can also be donated to schools as well.
Seeing as how Microsoft has inventory of the Surface RT tablet on-hand, this is an attractive way to move them out of the warehouse and into the hands of those that would be long term users of the platform.