Incumbents defeated in contested elections

Showing the percentage of incumbents re-elected and incumbents defeated in Ballotpedia's regular coverage of school board elections nationwide from 2018 to 2022 and those held in South Dakota in 2023. The total number of incumbents who ran for re-election is shown to the right of each bar.

These totals include incumbents who ran in contested elections, meaning those where they could have lost.