[daladd]

I'm curious why you would divide by .75 there (?)

[pinot]

9 months a year of employment, which is a gross oversimplification of how many weeks/yr a teacher is working.

[_uy6i]

It was a proxy for the fact most teachers have summers off, so are only working 3/4ths the year...

[selectodude]

Public sector salary pre-tax income is usually only 66-75 percent of total comp after adjusting for health insurance and pensions.