Phone: 469-752-4688


Degrees and Certifications:

Mrs. Williamson

Mrs. Williamson is starting her 11th year at Armstrong and her 33rd year in Plano ISD.  She serves as the Math academic support teacher and math department chair.  

Mrs. Williamson is a Plano product.  She attended Houghston Elementary, Haggard Middle School, Clark High School, and Plano Senior High School.  She has a bachelor’s and master’s degree from the University of North Texas.  

In her spare time, she enjoys everything sports related, especially college football and basketball.  She and her husband, David, have 2 children: Colin (24) and Laurie (20). Laurie is starting her junior year at Ole Miss.  

Contact information:



  • Tutorials  


    The math department holds morning tutorials 7:50 - 8:20 by appointment.  Request tutorials with your teacher using Ehall Pass.  Afternoon Tutorials are from 3:40 - 4:30 (no appointment necessary).  Teachers may be available other afternoons by appointment. All tutorials are held in the teachers room. 

    Any student may request afternoon tutorials with me using Ehall pass.  

    Students who have a grade below 70 are required to attend Thursday afternoon tutorials.  The teacher will determine the necessary length of time.  

    Students who are missing assignments are required to attend math extended day on Thursday afternoon from 3:40 - 4:30.  This is held in the cafeteria.