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San Diego State University is the most competitive out of all the CSU schools, so make sure you have a higher than average GPA and SAT score. It is about 10-12 miles east of the beach (a lot of students think it is much closer). There are a lot of students that attend so sometimes getting the classes you want can be difficult, but the enrollment systems in place have vastly improved over the years. The school is very social and is great place for people who enjoy the night life. If you want to live and work in the city of San Diego upon graduation, being an SDSU alumni is helpful in networking since a lot of Baby Boomers in management positions attended SDSU in their undergraduate years. Visit the campus if you consider applying there and you'll get a good feel of what it is like to attend.

http://www.cometosandiego.com/ has a big write up on this

good luck