This week determines how much money school districts receive from the state.
This is likely the most important week to Ohio schools.
"The state's going to dole out your tax dollars based on how many kids are in the seats of what school this week," said Auditor of State Dave Yost.
It's the only week that the state counts students. Yost thinks that's wrong.
"You've got a huge incentive one week a year to make sure kids are in school. The rest of the year you don't have much of an incentive because you're going to get the dollars anyway," he said.
He's proposing that state lawmakers change the rules to count students multiple times each year or mirror the federal government's system of using daily attendance figures.
A year ago the investigation began into a data scrubbing scandal at several districts in Ohio. They were accused of changing attendance records to get rid of some of the worst test scores. Yost says doing multiple counts a year would penalize schools for doing that.
"Because if you disenroll a kid to try to get the test scores off of your test grade card then you also lose the money," he said.
Any changes would require legislation at the Statehouse.