(ABC 6 News) – Iowa lawmakers crafted a bill that would require public school teachers and students to sing the national anthem at least once a day.

The will would also require social studies classes teach about the meaning and history of the anthem.

Any teacher or student who chooses not to sing the anthem would be required to maintain a “respectful silence” and stand at attention.

If a teacher refuses, then the school would need to select another person to lead the class in song.

The bill passed a subcommittee in a 2-1 vote.