Legal Question in Education Law in California

It is illegal to record anyone without their consent.

The question didn't indicate whether this is a class at the secondary or post-secondary level. As a professor for almost 40 years, I expect students to take notes and study them. However, the content of my lectures is my intellectual property. As a student, you have a limited "license" to use this property. You do not have the right to sell the notes or use them commercially. You also do not have the right to publish them, without my consent, including sharing them with others. The previous answer is not entirely correct. If it is a lecture class, then the teacher/professor`s statements have an implied consent to record them. Context is everything.