Andrew Clements delivers the latest in his adventure-filled school series. This could be the last great Memorial Day weekend on Barclay Bay, and Ben knows it. This time next year, he might not be able to stand in the yard of the Oakes School and watch the harbor shake off winter--boats buzzing just beyond the bulkhead and families spreading picnics in the fields. If the school gets torn down and replaced by an amusement park, the town will never be...