Last year (FY07), the district cut transportation for elementary students within one mile of school, based on sidewalks, speed limits, etc. So, you would expect that there would have been huge costs savings. Yet ...
District transportation costs rose between fiscal years 2006 and 2007, plus the district purchased additional buses; a $1 million worth. So, the district cut services, increased expenditures, and purchased buses. Doesn't say much for cost savings, does it?
Wouldn't it make sense for the district to reduce transportation expenditures under the current level of service, reaping the benefits of the updated walk policy? Such efforts would allow the levy to last another year. But, alas, the district just wants to continue spending your tax dollars; business as usual I suppose.
note: It's all reported in the district's Comprehensive Annual Financial Report (CAFR) for FY06 and FY07, available here for FY06 and here for FY07. (Search for "transportation.")