A few days before Gov. Walz's decision to keep Minnesota schools closed through the end of the year, I ran out to Wrenshall School to scan materials for my classes. The only person in the building, I walked the hallways and looked into several empty classrooms - desks, books, decorations, teaching materials, all packed away. The senior hallway that had only weeks before bustled with noisy students and slamming lockers now stood silent, locks removed and lockers cleaned out. Although it was April, everything about the moment told me it must be June - summer vacation, the only time when the s...