Buster's School Lunch Almanac is a notebook written by Buster in which he records everything he has eaten in school since first grade. It first appears in the episode "The Great MacGrady". According to Buster, he is able to predict school lunches with ninety-nine percent accuracy. When Skip Bitterman becomes cook during Mrs. MacGrady's illness, Buster's predictions fail and he assigns names like "Skip's Mystery Stew #6".
In the introduction to "Ladonna's Like List", Buster mentions the almanac again.