Basically there's no one in charge except for the Sheriff and IV Foot Patrol; it's not part of the actual campus and never was, so it's jammed with a high density of 18 to 22 year olds away from mommy and daddy. A couple of decades ago some ass in a national magazine rated Isla Vista as a super-party town for Halloween and ever since then ... well, let's just say the Sheriff and Police call in their mutual-aid cohorts from the counties next to us, use road blocks against the swell of non-resident traffic, get the UC chancellor to assist them in sending pre-Halloween flyers everywhere saying "Stay Away, Alcohol laws will be enforced"... and it's still a mess.
UC Santa Barbara itself is a fantastic place for an education; it's lousy with Nobel Laureates in Chemistry and Physics, has an exceptional Religious Studies department with an endowed chair in Tibetan Buddhist Studies -- great place. But I would not want to send my 18-year old there as a freshman to live in IV without supervision.
I'm heartsick about this too.