For a parent, it’s a basic question: Is a professional, well-prepared teacher working with my kids? Increasingly, the answer may be no in Florida’s public schools. Headlines this summer have made clear that we have a shortage of teachers. The Orlando Sentinel found nearly 70 teaching jobs posted for the Lake, Orange and Seminole districts at the start of school. As of Aug. 28, Lake County still was seeking 11 teachers for one elementary school.