Academica is a free theme for WordPress created by WPZOOM.
Academica is an education- and school-oriented CMS theme with a three-column layout and modern design. It is easy to customize and comes with a custom widget, three templates for Posts and Pages.
(Description "Academica" Theme from wordpress.org)
You can download Academica for free via the provided download link and include it into your themes folder of your WordPress installation. Also you can directly search for it in the WordPress admin interface in the themes section and install and activate it from there.
More information, screenshots and reviews of Academica Theme can be found here.