Where can I get my SAT essays checked and graded

I am currently preparing for SAT writing. So I need to find someone (professional, of course) to check my essays and offer some suggestions. Can anybody recommend some websites where I can have my essays checked (for free)?

Your help would be greatly appreciated.

Go to collegeboard.com, click on For Students…
Log in to collegeboard.com
Click on the My Tests tab.
Click on “My SAT Scores” under Status at the bottom right.
Put in you password again.
Click on “Understand your Test Performance” for the particular test date you want to see the essay from.
Click on the “Writing” tab at the top.
Click on “Your Essay” just below the tabs at the top.
And scroll down to see your chickenscratch writing!