From the author's README on Thunderstore

COLLEGE STICKERS - BIG TEN CONFERENCE

This is a sticker pack for all 18 teams currently in the Big Ten conference in the NCAA. Includes: Illinois, Indiana, Iowa, Maryland, Michigan, Michigan State, Minnesota, Nebraska, Northwestern, Ohio State, Oregon, Penn State, Purdue, Rutgers, UCLA, USC, Washington, and Wisconsin.

This is a non-commercial, fan-made mod. All rights belong to the respective colleges and universities.

Install College Stickers Big Ten

You need ReSkate and your own copy of skate. on Steam.

Open ReSkateLauncher.exe and go to MODS.
Search for College Stickers Big Ten and click install. The launcher also installs anything it depends on.
Press PLAY. In game, the MODS tab of the ReSkate menu (Insert) turns it on and off.

Or install it by hand: download the .zip and drop it on the launcher window, or unzip it into its own folder in Mods\ beside Skate.exe.

Maps show up in the ReSkate menu's level list. To join a server running a custom map, you need the same map installed. If the game won't load after installing, see known issues.

skatemods doesn't host or review this mod. The download comes straight from Thunderstore. Only install mods you trust, because scripts can run code.