More About education

Economist makes an interesting case for a voucher based education subsidy. Given our own state of absymal education system (see my cribs on the poverty pushing jhoolawallah, that blight on our nation, I think this should come as an eye opener to those who decry any private initiative while simply burying their heads in sand about the shocking failures of policy past 60 years.
I wonder if we would keep going to same doctor prescribing same treatment for a malady that keeps getting worse when other treatment exists (some as shown here, even work). Somehow its so ingrained in our psyche that we must take it as gospel truth what our rulers spew.
Maybe system needs to answer
1. What has been the investment in education till now?
2. What is the annual expenditure on education today?
3. If this expense was instead directly given to students free to choose a public or private school in fees subsidy, how many kids could it have financed?
4. What is the quality of education been given in our public schools, measured in terms of success in objective exams by independent agencies over a period of time?