So the page-grader is giving my site an A, but it is ranking below some websites that the grader gives an F to. What is the point of the page grader?

[Meier]

Basically, I am new to this..very new.  In fact, my field was neuroscience, and now I work in marketing..

I just started using seomoz, and for one website that I build. I followed all of the guidelines moz has to offer. On the grade section, I got an for a specific keyword.  However, when I rate my site for that keyword, it does not even rank in the top 50.  The keyword is even in the domain!

Also, some sites that rank in the top 25 have an F rating for the same keyword.  Why do they rank higher?

[Meier]

Whoops, I meant to say i received an A for the website that I built.  To clarify, for keyword "XX", my website receives an A, and a different website receives an F.  However the one with the F ranks much higher.  Why is this?

[TheeDigital]

Even Moz's grader doesn't take all factors into account, but the biggest issue you are likely missing are links, could be external or internal or both.  Make sure you have a few different keyword variations linking to the page, check the backlink profiles of a few of the top pages to make sure but I bet they have some anchor text links coming in that you are likely missing, giving them more relevance in the eyes of google.