shore attended meadow creek christian school in andover, minnesota until 9th grade, when he began attending coon rapids high school in coon rapids, minnesota. as a senior, he was the minnesota gatorade baseball player of the year after going 9–0 with a 0.27 earned run average (era) as well as a .429 batting average. during his senior season, shore was in pre-draft talks with the cleveland indians who wanted to draft him in the third round of the 2013 major league baseball draft, but the team wasn't willing to offer enough money to pry shore away from florida and instead decided to go with university of louisville pitcher dace kim. shore was ultimately taken in the 29th round by the local professional team, the minnesota twins, but ultimately chose to attend school instead of signing.