La Jolla’s Bishop’s School, tony alma mater of the late Andrew Cunanan, the gay serial killer who murdered fashion icon Gianni Versace before killing himself in 1997, is on the prowl for a new “Head of School,” according to a help-wanted ad in last Sunday’s New York Times. Bishop’s is looking for someone to “build upon the extraordinary legacy of the current Head, who has announced that he will retire in June 2009,” the ad says. “Honoring its affiliation with the Episcopal Church, the School enthusiastically welcomes a diverse community and pursues high standards of moral, ethical, and civil conduct.” The departing Michael W. Teitelman has long headed the school. A fictionalized version of the Cunanan saga was portrayed in Most Wanted, a musical drama staged by the La Jolla Playhouse last fall, complete with prep school uniforms. According to its website, Bishop’s requires each student to wear a “TBS embroidered polo shirt in white, forest green, navy or sky blue in short or long sleeves. (Only seniors may wear maroon polo shirts).” … Ex–San Diego congresswoman Lynn Schenk is helping to stage a 25th anniversary bash in Beverly Hills this month for her onetime boss, former California governor Gray Davis and his wife Sharon. She’s teaming up with Garry South, another former top staffer to Davis. The party is set for the home of L.A. real estate mogul and philanthropist Dick Ziman and wife Daphna.