School Districts may offer Special Assessment tax exemptions to eligible taxpayers. Exemptions may be offered if you are:
65 years of age or older
receiving Supplemental Security Income for a disability, regardless of age
receiving Social Security Disabilities Insurance benefits, regardless of age, with a yearly income that does not exceed 250 percent of the 2012 federal poverty guidelines issued by the United States Department of Health and Human Services
The following is a link to the Santa Clara County Department of Tax and Collections website. You can check to see if your school district offers and exemption, and how to apply for an exemption.
https://www.sccgov.org/sites/dtac/tax/Pages/parcel-tax-exemptions.aspx