I think the parent’s tone/style would be risky for many to take, but I don’t think you could be faulted to ask something along the lines of “what’s the goal of

I think the parent’s tone/style would be risky for many to take, but I don’t think you could be faulted to ask something along the lines of “what’s the goal of the meeting, and is there an agenda and pre-read materials that will be distributed in well in advance of the meeting so that I can come prepared to contribute?”