Question: A school board rule required a pregnant school teacher to take unpaid maternity leave five months before the expected childbirth and to give notice six months before the expected birth. Such a teacher was not eligible to return to work until the next regular semester after the child was three months old. A pregnant school teacher sued the school district for violating the Due Process Clause of the Fourteenth Amendment to the U.S. Constitution. Was this claim correct? (Cleveland Board of Education et. al. v. Lafleur, 414 U.S. 632)