Another option you have is to take a tape recorder. You must declare at the beginning of the meeting that you will be using a tape recorder. The school is also allowed to tape the meeting. If you don't understand something ask for clarification. People generally respect an assertive person.
People tend to take advantage of a passive person.
At meetings, let your nonverbal behavior tell others that you know you belong on the team. Like other skills, assertive communication comes with practice. Although it's important to stand up for your child's rights, remember it's also often necessary to compromise. Decide ahead of time which points are negotiable for you and which are not. Learn to escalate.