NEWARK, Del.--(BUSINESS WIRE)--Sallie Mae (NASDAQ: SLM), the nation’s saving, planning, and paying for college company, today announced Chairman and Chief Executive Officer Raymond J. Quinlan will speak at the 2015 Barclays Global Financial Services Conference on Wednesday, Sept. 16, at 8:15 a.m. EDT. A live audio webcast, along with presentation slides, will be available at SallieMae.com/investors. The replay of the presentation will be available for 180 days. Sallie Mae (NASDAQ: SLM) is the n