Thomas Ellis signed an agreement with the BlueSky Charter School to serve as its director for one year, from July 1 to June 30. A sentence in bold type stated that the employment was “at will.” The agreement included a provision for automatic annual renewal unless the school’s board acted before April 15. On May 7, the board terminated the arrangement. Was Ellis an at-will employee? If so, what effect did this status have on the board’s authority to terminate his employment?