Don't be obtuse. A PhD means you've done research towards improving the ability to educate others.

A PhD in Education certifies you to do research in education to potentially teach others about in the future. The intent is to generate new ideas and try new things, and the PhD is a qualification that you can approach that in (hopefully) a scientific manner, and that your results will be useful and relevant to your field.

tl;dr: No, to research about education.

No. It educates you to do ground-breaking research in education and advance the state of the educational art.