I see people online using instagram and facebook apps regularly after they have graduated. The whole previous time that they had, they used for studying solely and didn’t distract themselves with social media.
Whereas, I have started using it before getting my degree because I am keeping in touch with what is being taught, collecting memories so that when life moves forward I can recall those good past times. I can not concentrate without talking it out and sharing what I have learned concurrently. It is of no difference whether you use social medias before graduation or after graduation. It depends on your attention span and how you manage to multitask without abandoning the other relevant task.