 To put that in context, in one of the studies, they looked at two sets of districts. One set that got a lot of COVID relief and the other set that got less. The set that got more recovered about 50% of the learning loss from the pandemic, whereas the districts that got less only recovered 15%. There was a notable gap, but even the districts that got a large sums of money, they haven't fully recovered from the pandemic. How is it measured, Matt?