A federal appeals court refused Friday to block Proposition 227, the voter-approved initiative that bans bilingual education in California.

The 9th U.S. Circuit Court of Appeals in San Francisco denied, without comment, a request by bilingual education advocates for an injunction that would have prevented the measure from taking effect Monday.Meanwhile in Los Angeles, U.S. District Judge Lourdes Baird refused to block the nation's second-largest school district from proceeding with a new teaching plan aimed at complying with Proposition 227.

The ruling clears the way for the Los Angeles Unified School District to educate its 312,000 students with limited English proficiency without the benefit of teaching them in their native languages.

"There's no question it will cause a considerable amount of disruption," said Baird. "But as far as the magnitude of the change, the methodology is basically going to be the same."