There's lots more to authenticity than simply creating a LinkedIn account. You must be an active user, engage with people, update your profile regularly so it stays true to your developments and achievements, and be genuine.
Recruiters check this when assessing you, so it’s well-worth doing!
Ethics of social media usage within education is a current hot topic!
Main factors I considered include: age of students using this method of learning, rules for teachers and students so appropriateness of situations isn't ambiguous, social media types to be used, intellectual property, and plagiarism.