 MELVILLE, N.Y.--BUSINESS WIRE--Henry Schein, Inc. Nasdaq: HSIC is helping children around the world return to the classroom through its 24th annual Back to School program. This year, Team Schein Members at 22 locations in the U.S., Canada, Spain, and Ireland are donating backpacks filled with school supplies to almost 4,500 children. Since the programs inception in 1998, the Company has helped more than 60,000 children start a new school year with confidence. At each Henry Schein locatio 