As a group, we tend to think we know it all.

I’ve heard lawyers express the belief that they know more than doctors know about medicine.

I’ve heard lawyers say they know more about engineering than many engineers.

I’ve heard lawyers say they know more about business valuation than CPAs, business brokers, and appraisers.

So it comes as no surprise, to me anyway, that many of us think we know more about search engine optimization than the search engine optimizers.

When it comes to search engine optimization, we can actually test ourselves (or others seeking to sell us search engine optimization services) and find out what’s known and what’s not. There’s a quiz. It’s graded, and it’s shockingly difficult.

The Moz SEO Expert Quiz has 50 questions and—theoretically—takes 15 minutes to complete. It’s free.

Go ahead and test your knowledge. You likely won’t score very well (or as well as some of us might think), but if you’re disappointed in your score, you’ll have learned quite a bit by identifying your weaknesses. If you’d rather not take the quiz yourself, then go ahead and administer it to whomever is helping with your SEO. I guarantee you’ll find the results educational.