MORTON GROVE, Ill. (Feb. 13, 2013) – Xylem Inc., announced the Bell & Gossett® Little Red Schoolhouse® has received LEED certification for another of its industry-renowned courses. The Schoolhouse’s Design & Application of Water-Based HVAC Systems course has been approved by the Green Building Certification Institute (GBCI) to provide credit toward the credential maintenance requirements of LEED certifications.