School start time is already 8:50AM in Seattle, no convincing needed.

They start earlier in Bangor, but the sun rises earlier in Bangor, so again everything already lines up quite well.

My kid’s elementary school in Seattle starts at 7:50 AM

Yeah, you can't have kids walking in daylight during the winter solstice unless all schools start at the same time. You can pick a time zone to match the school start time, or you can pick a school start time to match the time zone. But any school more that 30 minutes different has kids walking in the dark during the winter solstice.