The Center for American Progress has done some number crunching on what John McCain's economic policies really mean

From The Field:

The news is exactly what you’d expect - tax cuts for corporations and wealthy Americans that leave struggling families behind.

More than half of Senator McCain’s tax cuts — $175 billion a year – go to corporations. Another $60 billion spent on repealing the Alternative Minimum Tax goes to very high income taxpayers. And his gas tax holiday lasts only three months and expires before he takes office.

Senator McCain does propose one tax break that will benefit many middle-class families: doubling the personal exemption for dependents from $3,500 to $7,000. The proposal ill let parents earn $3,500 tax-free for each child they have. Its value is higher to
higher-income families:

• Families in poverty – who pay sales and payroll taxes, but usually not income taxes– will not get any tax relief at all. In the families shown in the table, the adults are working full time earning the minimum wage and yet they live in poverty. These families would not receive a tax cut from the McCain plan.
• Typical middle-class families – defined as those in the 15 percent tax bracket –would receive $525 per dependent.
• High-income families in the top tax bracket – who pay a 35 percent tax rate – would receive $1,225 per dependent.  
  

• No wonder John McCain didn’t want to get into specific proposals. It’s because his multi-day photo-op extravaganza is a complete sham. The Center for American Progress put together estimates of the effect McCain’s massive tax cuts for corporations and the wealthy would have on the poor, revealing the sort of grim reality a McCain presidency would offer to families who need the most help.

  Not only would the McCain proposed economic plan not provide any relief for the families who need it most, but that same economic plan could potentially strip programs that low income American’s depend on of 40% of their budget. Programs like Head Start, Title I and Pell grants would suffer. Head Start alone could see a 3.2 billion cut from its budget, meaning 340,000 children would be left with out access to early education.      http://ruralvotes.com/thefield/ 
  I'd add - check out McCain's education policy on his website.   Mumbo jumbo that prescribes - absolutely nothing.