Did your milk come in a bag at school lunch?

Growing up, we had two tubs of milk bags at school - regular or chocolate. We’d drink the milk until the bag was empty, blow em up, and launch the plastic straws across the cafeteria. One or two poor summabitches would stab through their bag a day and get milk everywhere. It was the best and worst part of school lunches.

I was talking about this today and apparently this is only a south LA thing. My friends from Shreveport said that their milk was in a carton.

I need to know where the Mason-Dixon Line of bagged milk lies so I know who to trust.