Nationally representative data from the 2012 School Health Policies and Practices Study examined whether state assistance on indoor air quality (IAQ) was associated with district-level policies and practices related to IAQ and integrated pest management (IPM). Districts in states that provided assistance on IAQ were more likely than districts not in such states to (1) have an IAQ management program (p < 0.001); (2) require schools to conduct periodic inspections of the heating, ventilation, and air conditioning system (p < 0.05); of the building for cracks, leaks, or past water damage (p < 0.01); for mold (p < 0.01); for clutter that prevents effective cleaning and maintenance (p < 0.05); of the plumbing system (p < 0.01); and for condensation in and around school facilities (p < 0.001); (3) have an engine idling reduction program (< 0.001); (4) have a policy to purchase low-emitting products (p < 0.05); and (5) require IPM strategies (p < 0.05). Increasing the number of states that provide IAQ-related assistance to school districts and schools may improve school IAQ.