The state directs such small accessory units, to increase housing in cities. But cities get to regulate the local conditions. The fight in Seattle is joined in a few weeks.
The City wants to allow them all over town, in effect creating duplex zoning. The City has a long way to go to earn enough confidence in the neighborhoods for this experiment.
Better graduation rates in Everett shows that good teachers and smart decisions about curriculum make a difference. But maybe we need to teach young people systematically about decision making.