Proposition 15 advocates make their case to raise commercial property taxes

State Superintendent of Public Instruction Tony Thurmond joined proponents of Proposition 15 on Thursday to urge voters to approve the proposition, which would increase property taxes on some commercial and industrial properties.

Thurmond argued that the proposition, which could generate as much as $11.5 billion in annual revenue according to the independent California Budget and Policy Center, is critical to helping the state spend more on education.