You may have already seen this given it's recency in the news cycle, but if you're genuinely interested in studies, [url=http://digitalarchive.maastrichtuniversity.nl/fedora/get/guid:1c01c994-ed08-4b51-a864-1d2fc65c1731/ASSET1]here's[/url] a study that finds a correlation between cannabis use and bad academic performance ([url=https://www.google.com/amp/s/www.washingtonpost.com/amphtml/news/wonk/wp/2017/07/25/these-college-students-lost-access-to-legal-pot-and-started-getting-better-grades/#xxri=1]accompanying WaPo article[/url]). Now, I'm pro-legalization, and studies like this won't do anything to change that, but they're interesting and useful information nonetheless.