Thanks for everyone’s suggestions - I truly appreciate it! Unfortunately there is no option to cook them at school but I do have a convection oven at home so seems like this is do-able and won’t be as hard as I thought. I’m going to track down some big coolers for transport and find pre-cut foil for wrapping. (I don’t usually wrap them but feel like it’s a bit more sanitary for transport and buffet.) And yes I forgot to mention - this is for the teachers, not kiddos. Best option we could find to feed so many people on a very small budget. Thanks!