We had a good experience with them as our school was one of the first ( I think) and so they were not too big and the brothers who run it are very approachable. Having said that, it is the luck of the draw from year to year what instructors they will get. You have to find people who are free around 3-5 pm so most likely college students or some other work situation. Also, remember these are chess people so may not be the most outgoing as it is a quiet game. I also think that just because someone knows a lot about something does not mean they can necessarily teach it. So, again, it is luck of the draw each year. if your child is advanced, he will probably be fine. I think it was the youngest and least experiencd who struggled on our group. I liked the company and thought they did as well as any after- school activity can do in regards to hiring and keeping a good talent pool-- something I think must be very difficult. I would say try it for a year as it can't hurt.

We have schedule conflict. And need to make decision whether to register Chess club run by Silver Knights in PoplarTree ES.
This is two hours after school program, including one hour tournament coach.
Looking forward to hearing your experience on this kind of chess club.

Is it well-organized? How do they guide 90 kids in a club at the same time and make them practice and learn effectively?

My DS7 loves chess, started tournaments two months ago with rating of 600s, just need more practice to enhance his knowledge.
But, he has another beloved club at the same time, need to make decision which one to attend.

Looking forward to hearing your experiences on this school-based chess club.

Thanks!