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About Us



Timothy J. Keller, President and CEO

Tim is an entrepreneur with over 30 years’ experience in product development and program management. Mr. Keller developed entrepreneurial skills helping launch and grow Honeywell Power Systems where he served as a Principal Engineer and was one of the original team members of the start-up venture. As founder of Progressive Language, he worked closely with top linguists to develop PLI's learning methodology and language analysis tools. Mr. Keller has two patents, has traveled extensively in Latin America, Europe, the Middle East and Asia, speaks Spanish and is learning German and French. He received B.S. and M.S. degrees from Arizona State University.



  • Did you know Progressive Language has a Patented pedagogy?

  • Progressive Language programs are used in multiple countries 

  • Click here to see the conditions of use

  • Young children's plastic minds absorb language much faster then adult or teenage minds.

  • Progressive Language seeks to give a child an experience as close to immersion as possible with activities for the home.

For Fluency.

For Life.

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