We organize biennial meetings (commonly called Principal Investigator (PI) Meetings) for the NSF Advancing Informal STEM Learning (AISL) program and the projects it supports. These meetings are by invitation-only and offer an opportunity to discuss trends and issues in the field and to get updates on the latest directions in federal funding. PIs are invited to represent their projects, and for the first time in 2021, community representatives for projects were also invited. Meetings held prior to 2023 were organized by The Center for Advancement of Informal Science Education (CAISE).