A group opposed to federal education standards known as the “Common Core” gave a presentation at the public library Tuesday, characterizing the standards as an infringement on rights and an attempt by President Barack Obama and the United Nations to water down education and moral standards.

Common Core violates the U.S. and state constitutions and usurps parental rights, attorneys Nathan MacPherson and Brent Winters told a crowd of about 20 residents, including several homeschool parents.…