An Idaho parent has discovered this language in the Idaho Code of Laws and is using it to back her up opting her child out of testing. Others may be able to use it:
Section 32 -1010, Idaho Code (2015). Parental Rights
(1) The interests and role of parents in the care, custody and control of their children are both implicit in the concept of ordered liberty and deeply rooted in our nation's history and tradition. They are also among the unalienable rights retained by the
people under the ninth amendment to the constitution of the United States.