No follow .edu backlinks are not much good. But they are useful up to some extent.

Google will recognize them as a some valuable backlinks count, because edu backlinks.

But they are not important as do follow .edu backlonks.

Do follow backlinks are really powerful to increase your search engine rankings.

Dofolow links are always better because they can juice pagerank to external links too but nofollow ones don't do this. But nofolloe backlinks are still counting as your backlinks and you can see them in Google webmaster tools too.

Nofollow .Edu links are effective. Seomoz has a tool that allows you to compare your backlink profile to your competitors in a very clear way. Based on that data, have a few sites that I've exclusively used nofollow links on and they are ranking 1st for a number of keywords. If your site has quality content and you've taken care of the on page SEO then quality links will help. It doesn't matter if they are do follow or no follow. With that said, if you are talking about profile links, then the effect to your rankings will be minimal.

Read the article below

SEO Experiment: Nofollow Links DO Pass Value & Rankings in Google | SocialSEO.com

You should have a mix of both Nofollow and Dofollow Backlinks.

It will look very unnatural if you don't have some no follow links.

Same strategy applied because Google only consider Do follow backlinks whether, its .edu |.gov and normal blogs