Students now have limited access to Youtube! Teachers can approve videos that they want their students to see. Teachers and students need to log in to their school account in order to access approved videos for students and all access for teachers.
As a teacher, you will need to scroll down to the very bottom of the youtube page and turn off restricted mode as shown in the picture below. Once you are logged in and out of restricted mode, you will see a blue bar underneath a restricted video in which you can enable the video. Students and personal gmail accounts will not be able to change this mode.