Hello, Lisa.
Thank you for using our Ask an Advisor.
If you have not yet done so, we wanted to suggest that you speak personally to the principal regarding allowing chairs within the gymnasium? This can open up a dialogue that will allow you to understand what policies or concerns may be preventing her from allowing the chairs in the gym, while also presenting you with the opportunity to problem solve these issues. Also, we would advise that you set up a meeting with the principal during a time where she can focus on the issue at hand.
Although a large group might not get the results you want, taking one or two people who were requesting the chairs to this meeting may also be beneficial. Advocating for someone while they are present to discuss their issues may bring about a better resolution.
Hopefully, this advice will help you. Please let us know if we can help you further.