College of Southern Nevada Priority Registration is now in progress. Priority registration is for currently enrolled students, check your MyCSN for your specific enrollment date and time. Open registration for all students begins April 19th. Classes are available online or at the CSN campuses in Las Vegas. Payment deadline for Summer classes is May 14th and classes begin June 4th. If you register after payment deadline, payment due at the time of registration. For questions call 702-346-2485 or stop by the campus at 140 N. Yucca St.