Portland Community College | Portland, Oregon

CAS student with instructor

The Computer Applications and Office Systems (CAS/OS) program prepares students for careers in two large and growing fields: administrative support and web site development and design. Many students take these courses to improve their current job skills or to learn new skills to help them move into a new career. The CAS/OS classes will support students in many other academic endeavors. For the benefit of our students, nearly all CAS/OS courses are offered in both a distance learning and computerized classroom format.

Degrees and Certificates

In this program you can earn the following:


  • Associate of Applied Science, Administrative Assistant
  • Associate of Applied Science, Administrative Office Professional
  • Associate of Applied Science, Website Development and Design


  • One-Year Certificate, Administrative Assistant
  • One-Year Certificate, Website Development and Design
  • Less than One-Year Certificate, Virtual Specialist
  • Less than One-Year Certificates: Career Pathways
    • Computer Software Fundamentals
    • Administrative Support
    • Business Office Assistant
    • Web Assistant I
    • Web Assistant II
  • Marketable Skills Awards

See the Catalog for information regarding program requirements. All CAS/OS courses applied to a certificate or degree must be passed with a "C" grade or better.

What's Next?

Computer Applications program flag
  1. Complete the steps for new students
  2. Plan how you'll pay for college
  3. Meet with a CAS/OS instructor for advising and pick up a Recommended Course Sequence handout