"Harbor school is seen in virtually every episode of \"The O.C.\", during the first two seasons, beginning with Episode 8 in Season 1, when Ryan enrolls in the private school. Harbor school has probably been seen more often than any other filming location on the show except for the Cohen Residence. Even in the Season 4, after the main kids had graduated from Harbor, they continuted to show the school because Marissa's sister, Kaitlin, went there."@en . . . "Harbor school is seen in virtually every episode of \"The O.C.\", during the first two seasons, beginning with Episode 8 in Season 1, when Ryan enrolls in the private school. Harbor school has probably been seen more often than any other filming location on the show except for the Cohen Residence. Even in the Season 4, after the main kids had graduated from Harbor, they continuted to show the school because Marissa's sister, Kaitlin, went there."@en . "Harbor School"@en .