Be sure to document everything that happened at the meeting, what the next steps will be, and a date for the next meeting, if necessary.
Warning: In a bureaucratic system like a school district, your case will be taken more seriously if the school knows that you're keeping a paper trail. Document all the conversations, phone calls, and meetings. And maintain a positive attitude. Your goal is to find a solution or some resolution to the problem, not just to complain about it.