Found this site that gives a very clear summary of due process rights and teachers. Heaven forbid that the Tea Baggers in the legislatures would look into legal precedents before passing a new law.

The Due Process Clause of the Fourteenth Amendment, like its counterpart in the Fifth Amendment, provides that no state may "deprive any person of life, liberty, or property, without due process of law." This clause applies to public school districts and provides the minimum procedural requirements that each public school district must satisfy when dismissing a teacher who has attained tenure. Note that in this context, due process does not prescribe the reasons why a teacher may be dismissed, but rather it prescribes the procedures a school must follow to dismiss a teacher. Note also that many state statutory provisions for dismissing a teacher actually exceed the minimum requirements under the Due Process Clause.

The United States Supreme Court case of Cleveland Board of Education v. Loudermill is the leading case involving the question of what process is due under the Constitution. This case provides that a tenured teacher must be given oral or written notice of the dismissal and the charges against him or her, an explanation of the evidence obtained by the employer, and an opportunity for a fair and meaningful hearing.