Here's what I wrote back.
You are still being ambiguous about the reason for this meeting. Please tell me what this meeting is for, and what it is that I will be unable to participate in because I have an externship which is essentially a class that meets during the time you are holding this meeting. And if it is something I want to participate in, you can anticipate further noise from me about you scheduling a meeting during my class time and then excluding me from participating in it.

I tried to find on-line the rules that give you the authority to make a meeting manditory, but I was unable to find the rules governing PAD.

Also, the link for this district has not bee updated in years.

I realize I sound hostile, but I am completely floored by someone other than an official school representative scheduling what they term a mandatory meeting. Class IS mandatory, and I will not miss my class to come to the meeting. And I do not see how you can fairly exclude me from participation just because I am following the school's rules. I am in law school, and I happen to be in PAD-not the other way around.

Thank you,
RP
Law School student--in a 20 hour externship program