While California, and the San Francisco Bay Area in particular, is home to some of the world’s most beloved tech companies, including Google, Facebook, Apple (News - Alert), Netflix and Twitter, a number of executives of some of the Golden State’s top companies have circulated an open letter to Governor Jerry Brown demanding that California overhaul its computer science education, according to Re/code.

The letter was signed by executives including Salesforce CEO Marc Benioff (News - Alert), Square CEO Jack Dorsey and Netflix CEO Reed Hastings. In addition to the business leaders, a number of educators also signed the letter, including Stanford president John Hennessy and Khan Academy founder Salman Khan.

“California is home to the computing revolution that transforms our lives and provides high-paying jobs. But 90 percent of our K-12 schools do not teach computer science,” the letter read.

The authors cited a Conference Board study that said that there were over 70,000 open tech jobs in California. They were also particularly interested in serving students of color. Only 74 African-American students and 392 Hispanic students across California took the AP computer science exam last year.

Despite the dearth of computer science education in K-12, it’s among the most popular fields of study in the state’s universities, including UC Berkeley and Stanford.

Students at lower levels are also clamoring for computer science education. According to the letter, over 34 million students have participated in Hour Of Code, where they can learn some computer programming.

On the other side of the Atlantic, students have faced similar problems. If they get any computer instruction, it’s mostly likely to revolve around teaching them to use office applications rather than programming. The Raspberry Pi, a cheap $35 computer, has been developed to give students hands-on experience writing code.

Meanwhile back in California, the letter called on Governor Brown to make the state a leader in computer science education at the K-12 level.