The Freedom From Religion Foundation (FFRF) published this letter, offering its interpretation of the American Birthright Standard. Here’s a quote from that:

FFRF is strongly urging the board to reject the adoption of American Birthright standards and uphold its duty to provide standards grounded in current scholarship, reflect best practices in social studies education and be inclusive for all student backgrounds and ability levels, as recommended by experts such as the National Council for the Social Studies.

“Public schools have a duty to ensure that instructional materials do not promote a particular religious viewpoint,” FFRF Staff Attorney Chris Line writes.

Social studies standards that falsely teach that Christian history and Christian traditions are inherently American and/or that religion makes up the fabric of ethics and morality (under the guise of secular history and moral philosophy) blatantly promote Christianity and violate the rights of district students and parents.