Districts have to follow the laws, which means they have to cough up the difference. ISBE estimates lawmakers would need to spend $142.2 million more in the next fiscal year just to fall short by the same percentage as this cycle.

Unlike the DoorDash settlement, which included information about how many drivers stood to divide the settlement pool, the Grubhub deal is short on details.

Expect a history lesson, bring a calculator and a working knowledge of actuarial science.