美国公立中小学校教师表达自由及其限度

The Freedom and Limitation of Expression for American Teacher in Public School

表达自由是公民的基本全力，他与思想自由和行为自由有显著不同。美国公立中小学校教师享有职务表达自由与个人表达自由。教师个人表达又分为教师公言论宇教师思言论。教师职务表达受学校教育的使命与学生的未成年人特点的影响而受到严格限制。教师的公言论比思言论受到更大程度的保护，但教师个人表达一旦与学生利益发生冲突，无论是教师公言论、还是私言论，都要受到适当限制。

Freedom of expression is one of basic rights of citizen， which is significantly different from freedom of idea and freedom of conduct. The American teachers in public schools have the freedom of professional and personal expression. Teacher’s personal expression can be divided as public speech and private speech by nature. Teacher’s professional expression is strictly limited by the mission of school and the character of immature students. Teacher’s public or private speech， will be reasonably limited， once it is contradictory to the students’ interests.