California school bond elections are local ballot measures that ask voters to decide on whether the school district that is sponsoring the measure should be allowed to issue bonds and to incur the additional indebtedness that bonds bring with them.
All public school districts in California are entitled to bond issues on the local ballot. A School Bond issuance is typically to finance a building project or other capital project.
California also has a statewide school building program known as the School Facilities Program, which is supported by statewide bond measures such as Proposition 51 in 2016. Statewide bond measures require a simple majority to pass.