Regional School Unit 16 in Poland says there is no school Wednesday because of vandalism of their school buses. In a statement on Facebook the district wrote: “Early this morning we learned of severe vandalism to our bus fleet tires. We will keep you up-to-date with what we learn and our next steps.” RSU 16 services Poland, Mechanic Falls and Minot. Follow the Bangor Daily News on Facebook for the latest Maine news.