Seeking air-conditioned classrooms

About a third of the classrooms in New York City public schools do not have air conditioning, and schools remain open through June 26. A teacher who once worked in the district writes in The New York Times that climate-controlled classrooms are critical for schools seeking to boost student achievement. When classroom temperatures climb into the 80s or 90s, schools are more like 19th-century sweatshops than 21st-century learning environments.