Thanks to the intrepid library researchers, Zoe had a better idea of how to try to beat the current craziness and get all of their missing folks back. Whether or not it would work...well, only time would tell on that one.

"Good evening, everyone. This is Principal Winchester with an important announcement. I need everyone who is capable of performing acts of magic to meet me outside of the school this evening to check on the mechanism that exists under the island. Please make your way to the school carefully. We'll all leave from there together to ensure everyone's safety, and I'll have further information for you there. Thank you."

[Aaaaand there's your announcement, magic team! We're handwaving the walk from the school to the device, so just head for the post linked above!]