What is Student Engineering Kits SEK?

Hi, IT from school sent me info to install SW for free. He said that I could choose between 2016-17 or 2015-16. What is Student Engineering Kits? I only heard/used the Students version before. What are the differences? If I use SEK to develop some models and later on decide to buy 2018-2019 Student version myself, will I be able to use models developed under SEK?

SolidworksGeneral