Of early retirement and budgetary planning

At tonight's City Council meeting (liveblogged here, for those interested), Councilor Lukes mentioned that the city was having to make up an extra million in their FY11 budget, as not as many people had taken the early retirement offer as anticipated. The city was counting on $2 million dollars in savings; it's coming back as $1 million.

Why isn't the school system in the same boat?
The schools didn't plan on the retirement money.
While the City budget when passed in June counted on $2 million in savings from early retirement, the WPS budget did not include the early retirement.
The somewhere around $350,000 savings is not, thus, already spent.

No, not gloating. Wondering about wiser courses, though.