I think it may be a very uncomfortable/intimidating situation for some kids depending on how big the meeting is and who is there. We have had IEP meetings with 10 people and some of them are not involved in any of the day to day they may but administrators, someone just involved in an eval, etc. It's very uncomfortable even for me, when the discussion isn't about me. I can't imagine being in room at age 14 where 10 people that you barely know are staring at you and discussing how well you are or are not functioning including personal details of your life or diagnosis. In a smaller meeting with just a teacher and case manager and maybe on or two other people having the student there seems more reasonable. I would probably just try to eliminate as many people as possible from meetings when the child is at the age when they should hear what is said.