Degrees and Certifications:

B.S. Education : Tarleton State University Certification: Composite Social Studies

Mr. Andrew Duncan

Hello, my name is Andrew Duncan. I graduated from Tarleton State University in 2003 with a B.S. in Communications with minors in English and Business. I was born in central Illinois and have lived most of my life in Texas (Houston area and San Antonio) and the Bay Area in California. 

This is my 13th year in education (3rd at Johnson) and I have taught at three different schools (Middle School and High School) in the Houston area and most recently at Brennan High School in NISD. I have taught US History, World History, World Geography, Government, Economics, Comparitive Religion and Philosophy. I have also coached football, baseball and golf. 

My wife and I moved to San Antonio the day after we got married. This year marks number 8 in SA. We have two boys, Mateo (4) and Lucas (1). 

Making strong connections and expanding young minds is one of the greatest joys of my life and I look forward to working with you this year.

Please feel free to contact me with any questions, comments or concerns! 



  • 1st - Personal Financial Lit & Economics  

    2nd- Personal Financial Lit & Economics  

    3rd- Financial Lit  

    4th - Personal Financial Lit & Economics  

    5th - Personal Financial Lit & Economics  

    6th - Lunch 

    7th - Personal Financial Lit & Economics  

    8th - Confrence