Is there any way to have a privacy policy graded?

In creating my SaaS startup, I'm looking to use my strong privacy guarantees as a competitive advantage. Problem is, nobody actually reads privacy policies, and instead companies get by on the 'vibe' of their privacy claims. I want to do something a bit more substantive than that.

Is there any service that offers a grading of one's privacy promises, or a list of clauses that, if used, would mean a company has a strong privacy policy? I basically want my startup to get an 'A' on privacy, and for my customers to see that, so that they don't have to read my privacy policy if they don't want to.