tcd004 writes: You've always suspected those trailer-type portable classrooms are no good, right? It turns out you’re right. Analysis of prefabricated classrooms in Washington shows the structures often don't allow for proper ventilation, leading to terrible air quality for kids. Students in temporary classrooms have higher rates of absenteeism than those in standard classrooms. And the energy-inneficient structures often become permanent, sucking on school energy bills for decades, and requiring more upkeep than permanent classrooms. What's needed are new designs for healthy, sustainable temporary classrooms.