It is a social club. I doubt that the speakers are any different from those of any other social club. There is certainly not anything in my experience that would make us think we are all conversing at a higher level, lol. Even if the subject is technical, it doesn't appear to be intellectual. I haven't been to a meeting in about five years. I still keep in touch with some of them. The fee probably isn't any greater than that of another national organization. The meetings were at 7:30 on a Friday night 50 or so miles from home, then they had Aftermath, which I didn't have to go to if I didn't want to, but it was where we went somewhere to snack and chat. There is also a weekly lunch meal. There are SIG's, Special Interest Groups. They might be for discussion such as a Bible SIG for Christians, or it might be Shooting Sports, which the local one has. There are also game nights, an annual picnic in a park, and there is a discussion group about significant events which I believe attracts 30-somethings. There are also regional gatherings, which I never was able to attend. It is not much different from (fill in a name) any local group but the distance was too much for me, and since at the time I was also in other organizations, it was the one to drop because of cost. If my family had been interested in joining and going with me, it would have made a big difference in my enjoyment.
The odd thing is that five or six of us Mensans were sitting in a restaurant one time for an occasion other than Aftermath, and we discovered that every one of us had failed a class in high school. For one, it was Science 101, but when it got to the interesting stuff, he began making A's. For another, it was focusing all the attention on the favorite courses. Does that tell you that classes for the gifted and talented are needed? Why be made to feel like a failure when you are a brainiac?
As another aside, in my last high school, the administration discovered that we were the first class to be almost entirely college bound, so they separated us by ability and those of us who were intending to go to college got what later became known as gifted classes.
One year, I chaired the scholarship committee. A student did not have to be a member to enter. I scoured the bushes for applicants. Having worked in schools, primarily as a substitute, and having helped our sons through that network, I wanted to avoid having teachers or guidance counselors pick the applicants. (Most of the time we homeschooled.) I not only sent notices to the guidance counselor, but to the school in general, the English department, and to the school paper as well as all newspapers, daily and weekly, in the region. The area pulled from was regional since the nearest other Mensa club is over 100 miles away. I contacted youth groups, ethnic organizations, church groups, and everybody I could find to send a letter to. If I remember correctly, we only spent an afternoon judging so there weren't very many essays. (I have heard from other groups that it is hard to get an essay or entry of any kind for a scholarship. One of our sons won a contest for volunteers--without an essay--because he was the only applicant. When my mother was widowed for the second time, she sponsored a scholarship for her husband at the college where he taught and eventually dropped it because of few applicants. I know of a local community college that has few applicants, and I believe that the college where my sister teaches has had no applicants for scholarship essays in the past.) Each essay for Mensa was read by three committee members, then the scores from the three judges were totaled.