ST. PAUL, Minn. (AP) -- The St. Paul school district and its teacher's union are discussing a new contract for the first time since the COVID-19 pandemic cut short a three-day teacher strike in March 2020.

Reports say as of Wednesday the two sides have entered mediation. The union is looking for smaller class sizes, more mental health support and 2.5% raises.

Get our free mobile app

The district wants to hold down costs in the face of shrinking enrollment. Minneapolis teachers also are in mediation with their school district over similar concerns.

See How School Cafeteria Meals Have Changed Over the Past 100 Years

Using government and news reports, Stacker has traced the history of cafeteria meals from their inception to the present day, with data from news and government reports. Read on to see how various legal acts, food trends, and budget cuts have changed what kids are getting on their trays.

LOOK: 40 Discontinued & Special Edition Kellogg's Cereals