Starting August 17th and running through the 24th, Twitter users will have the opportunity to enter PayPal’s back-to-school sweepstakes for a chance to win $50 and a $50 DonorsChoose.org gift card! For each day of the sweepstakes, a back-to-school themed trivia question will be posted to the PayPal Shopping Twitter handle; all users who “@reply” the correct answer will be automatically entered into the daily drawings. Visit PayPal Shopping on Twitter to learn more; http://twitter.com/PayPalShopping and follow DonorsChoose.org on Twitter too; http://twitter.com/DonorsChoose