The US Food Pyramid poster was in classrooms from 1992 onward
Most Americans are familiar with the Food Pyramid, a graphic showing the optimal number of servings for various food types which appeared in most schools for decades.
The image is actually a standard, and was introduced in 1992 by the US Dept of Agriculture, USDA, and titled the “Food Guide Pyramid”.
This comes as quite a surprise to many people who were at school way before that date, but still remember it exactly as seen today.
h/t JADR