While the strike continues, the district is offering lunches for students at many different parks and recreation locations from 10:00 to 1:00 on weekdays. See this link for locations, and also for some childcare options: https://www.seattleschools.org/news/family-resources-and-faq/
Also the City of Seattle is asking for volunteers to help hand out meals to families, from 10:00 to 1:00 on weekdays, at various parks and recreation locations. If you can help, sign up here.