KANSAS CITY, Mo. — Fourteen months after forcing former school superintendent Anthony Amato out of his job, the Kansas City, Mo., School Board is hiring a national search firm to find a successor.Instead of hiring such a firm immediately, the board tried to save money by using a team of networkers. Candidates were identified, but according to board president Marilyn Simmons, too many dropped out.Imagine that! Why would this school system possibly have trouble finding a new superintendent? Maybe because it is provisonally accredited and facing possible state takeover, or maybe because the board has changed superintendents too many times to count.