I was in Krogers yesterday, and noticed the prices for their cakes, it says full sheet feeds 60 people, when I used to work there years ago, we used to quote customer  that it feeds at  least 80 to 90 people, did the full sheet cake get smaller?

not really no, it didn't get smaller -- but the way i say it is -- there's no wrong way these days-- now there are confusing ways though ha!

It can get confusing.... some say a 9x13 is a sheet cake, some say an 11 x15 is a sheet cake and some say 12x18 is a sheet cake. 

So depending on what each of those cakes serve it could range from 30 servings to 80 servings. 

When I worked there 20 years ago, our half was similar to the 12 by 18, but I'm curious  what they use since their full  now only feeds 60, but a 12 by 18 feeds 54