By CHERI CARLSON, Scripps Howard News Service

California principals are facing shrinking budgets and mounting responsibilities to lead teachers and keep schools running -- creating competing pressures that may make the job untenable, a study has found.

California students will have a new vaccine requirement this fall, as officials try to thwart a whooping-cough outbreak in the state.

In what officials are calling a landmark move, California public schools now have state-approved environmental curriculum for students all the way from kindergarten through 12th grade.

VENTURA, Calif. - Carolina Canosa turned 13 this year. She has "Twilight" posters hanging on her bedroom wall and loves the Jonas Brothers, manicures and frozen yogurt, like any other teenager.

Carolina also albinism -- a condition that results in vision problems and little color in her skin, hair and eyes -- and that's what people always seem to notice first.

Christina Le sat down with a phone book the first week of school and began cold-calling local businesses.As the yearbook business manager at Oxnard High School in Oxnard, Calif., the senior hoped selling ads would keep the yearbook class afloat. "They listened to my spiel," Le said, but it has gotten harder to persuade them to buy.