Citizens are once again demanding right of way on the streets. They are outraged: the quality of the air their children breathe every day at school is downright bad. Parents are joining forces and take action every week, all over the country, under the name ‘Filter Café Filtré’. What is special is that this citizens' movement doesn’t get mired in criticism, but suits the action to the word. Committed architects develop alternative design proposals on how the design of school environments can be different and better.