Having an active, engaged parent community is a wonderful thing for a childcare center. However, managing parent volunteers often ends up feeling like a part-time job for your already exhausted teachers. If a teacher has to spend an hour on Thursday prepping specific craft materials just so a parent can volunteer for twenty minutes on Friday, it defeats the entire purpose.
You need to shift away from strictly in-classroom volunteering. Offer passive involvement options that actually help your staff. Send home cut-and-prep bags. Put construction paper and stencils in a ziplock bag and ask a parent to cut out fifty shapes while they watch television at home.
If parents do want face time with the kids, utilize technology. Have a parent do a ten-minute Guest Reader session via a live video call. The children still get the excitement of a special guest, but your teachers do not have to disrupt the entire flow of their classroom to host another adult in the building.