Hello, I have a large membership as well in my high school. In addition to the national policy, we require students to participate in at least 50% of our events, meetings, and service projects. Our membership chair keeps attendance records, and students are informed if they are approaching a probationary period due to lack of particpation. Students that don't participate at all are subsequently removed from the membership. We utilize Google Classroom for attendance, updates, and virtual meetings and events. In addition, the students manage an Instagram account and post announcements and pictures. In non-Covid years, I've tried to engage members that aren't my students at the door before our meetings, and have had a "member spotlight" where one of my students introduces and shares some fun facts about members that I don't know. I agree that it is quite challenging to get to know everyone, especially in our current conditions, but I think the students appreciate any attempt!