Usually the school lunches were good (late 1950's) - the cooks must have decided to have a clean out the refrigerator day - because they put canned vegetables (peas, corn) in red jello.
We used to call the lemon jello, shredded carrots, pineapple concoction "Golden Glow Salad" - I think it had a touch of lemon juice in it, too, to liven up the flavor a bit.