Phelps, a Caltech graduate and outspoken teacher, first posted the letter in an Internet chat room where the school district is frequently criticized.

• 费尔普斯毕业于美国加利福尼亚理工学院。他一向是个直率激进的教师。并带头在因特网上一个经常抨击校会的聊天室中发布了自己的那封信。