A lawsuit to strike the words "Under God" from the Pledge of Allegiance goes before the Massachusetts Supreme Court this week.
An atheist couple sued on behalf of three anonymous children in the Acton-Boxboro School District.
The American Humanist Association, which is representing the students, argues that the pledge uses wording that quote "strongly favors one religious class" over another.
A lower court rejected the suit last year because students can refuse to say the pledge. It also said that including the words "Under God" does not violate childrens' rights.
The Becket Fund for Religious Liberty is defending the school district.