A couple of schools have already given us copy and photos to start their yearbooks. They are the super organised ones!
But even if they don't have all their information your head teachers can be collecting photos from during the year and creative arts teachers can be be selecting works to showcase. Performing arts teachers probably have photos from the year's musical or play already so they can write their articles.
So your yearbooks can be well under way and pages already assigned to each faculty. It all helps in achieving your all-important, end-of-year deadline!
Good luck and keep encouraging your contributors!