Caroline Porter:

As states race to implement the Common Core academic standards, companies are fighting for a slice of the accompanying testing market, expected to be worth billions of dollars in coming years.

That jockeying has brought allegations of bid-rigging in one large pricing agreement involving 11 states—the latest hiccup as the math and reading standards are rolled out—while in roughly three dozen others, education companies are battling for contracts state by state.

Mississippi’s education board in September approved an emergency $8 million contract to Pearson PLC for tests aligned with Common Core, sidestepping the state’s contract-review board, which had found the transaction illegal because it failed to meet state rules regarding a single-source bid.