Gwinnett high school students have just a few more days to register for summer classes. Registration is open for online classes and for face-to-face summer classes available at three locations. June 3 is the deadline to register for online summer classes through Gwinnett Online Campus (GOC). The face-to-face summer program is conducting online registration through June 4, with in-person registration for face-to-face classes set for June 4 from 4 to 7 p.m. at Discovery HS. Online, learn more about summer options for high school students, including rising 9th graders.