What computer science is
Computer science is the study of computation — how to solve problems using computers. It is far more than coding: at its heart is computational thinking, a way of breaking down problems (decomposition, pattern-finding, abstraction, and algorithms) that applies far beyond the screen.
CS vs coding vs digital literacy
Three things often get confused:
- Digital literacy — using technology safely and effectively (every student needs this)
- Coding — writing instructions in a programming language
- Computer science — the broader discipline of computation, algorithms and data, of which coding is one part
How CS develops
CS education is expanding fast across K-12:
- Elementary — unplugged activities and block coding (like Scratch); the logic of algorithms
- Middle school — more robust programming, physical computing and robotics, data
- High school — real programming languages, plus AP Computer Science Principles (broad, accessible) and AP Computer Science A (Java, deeper)
CSTA and ISTE
Computer science is guided by the CSTA (Computer Science Teachers Association) standards, with the ISTE standards covering broader digital-citizenship and technology skills. A national push has made CS a graduation option or requirement in a growing number of states.
How CS is measured
The two AP CS exams anchor high-school assessment: AP Computer Science Principles (a broad, project-based intro that has widened participation) and AP Computer Science A (a deeper, Java-based course). Much CS assessment is naturally project- and portfolio-based — you show you can build things.
Access and equity
Access to CS is uneven, and expanding it — especially for girls and underrepresented students — is a major national focus, because CS skills open doors to some of the best-paid, fastest-growing careers. AP CS Principles was designed partly to broaden who takes computer science.
Careers CS opens
Computer and information technology is among the fastest-growing, highest-paid career areas: software development, data science, cybersecurity, AI and machine learning, IT and more — and computational thinking now benefits nearly every field. See the BLS Occupational Outlook Handbook and the Careers section.
How families can help
- Try free block coding (Scratch) or Hour of Code together
- Encourage building — games, websites, simple apps
- Frame CS as creative problem-solving, not just math
- Support access and interest for every kid, especially girls
Lessons and related resources
See the Computer Science lesson library, Mathematics, Engineering & Technology, and digital citizenship.
Frequently asked questions
- Is computer science the same as coding? No. Coding is writing instructions for computers; computer science is the broader discipline of computation, algorithms and data. Coding is one part of it.
- What's the difference between AP CSP and AP CS A? AP Computer Science Principles is a broad, accessible, project-based introduction; AP Computer Science A is a deeper, Java-based programming course.
- When should kids start learning computer science? Early. Elementary students can begin with unplugged logic activities and block coding like Scratch, building computational thinking well before formal programming.
- Do you need to be great at math for CS? Logical thinking matters more than advanced math for most CS. Some fields (like machine learning) are math-heavy, but many programming roles need solid, not exceptional, math.
- What careers does computer science lead to? Software development, data science, cybersecurity, AI, IT and more — among the fastest-growing and best-paid fields, with computational skills valued across nearly every industry.