Tableau is free for all students from academic institutions around the world, as long as they are using it as part of their course or for a personal project. In order to request a free one-year license, you will need to prove that you are enrolled in a program within an academic institution. Do not go to the website and download the free version with a 14-day license. Instead, follow the steps below to get a one-year license.
Go to the following URL: http://www.tableau.com/academic/students
Select the [Get Tableau for Free] hotlink.
Fill out and submit the form. Select your university. Use a ".edu" email address.
Tableau will send you an email so that you can use the license