Cal. Educ. Code § 22011

For an application or document requiring a signature, that signature shall be in a form prescribed by the system, including, but not limited to, on paper or made by electronic means. Notwithstanding any other law, an application or document made under this part, Part 13.5 (commencing with Section 25900), or Part 14 (commencing with Section 26000) that is signed and submitted by the person authorized to do so using technology and security measures prescribed by the system shall be deemed to be a signed and valid original document.