Summer Pre-College Programs in CA?

Hello! I am a current high school junior looking for a good pre-college program to attend this summer. I am applying for Santa Clara University’s Summer Engineering Seminar, but I’d like to have more than one option. I am interested in STEM fields (psychology, chemistry, neuroscience), and I’m hoping for a program that is 3 weeks or less, in California, and hopefully $2000 or less. Thank you for any recommendations!