California Senate Bill 277 (SB277) is a California law that removed personal belief as a reason for an exemption from the vaccination requirements for entry to private or public elementary or secondary schools in California, as well as day care centers. The final version of the bill was enacted by the California Legislature in 2015 (passing the State Assembly on a 46–31 vote[1][2] and the California State Senate on a 24–14 vote[2]) and was signed into law by Governor Jerry Brown on June 30, 2015.[2][3]