Children are not eligible to vote, for good reason. They are not mature enough to understand political issues well enough to avoid being manipulated by unscrupulous adults willing to take advantage of their emotions. Schools are allowed to formulate rules specially designed to protect their charges from such inappropriate manipulation, and should exercise their responsibility to insure such manipulation is not permitted.
Inappropriate behavior left unchecked is guaranteed to provoke an ever increasing cycle of escalation, until it is stopped, at the source. Willfully disrespecting our Flag, by children, is unacceptable and especially inappropriate within any Public (or publicly endorsed) secondary school environment or setting, and should be prohibited, subject to appropriate consequences.
This disrespectful behavior is a "snowball" rolling down a steep mountain, and needs to be terminated before it escalates it's speed and causes unanticipated and excessive damage further down the slope. School administrators need to step up to their responsibilities and condemn and prevent acts of public disrespect by students, regardless of their own personal, political and or social leanings which may not be fully comprehensible by the CHILDREN they are charged with supervising and protecting from external, inappropriate issues.