Phone: (469) 752-9300 ext. 29587


Degrees and Certifications:

B.S. Interdisciplinary Studies - Texas Woman's University 7-12 Mathematics & ESL

Mrs. Allison Tollefson

Welcome to PSHS! My name is Allison Tollefson, and I teach ESL Geometry, Math Models, and Algebra 2. I started teaching here in Spring 2021. I am a Plano Senior High graduate, and I feel honored to be back here as a member of the faculty. I found my dream job doing my two favorite things: teaching math and helping students develop multilingual communication and literacy skills. On a personal note, I am married and have a 2-year-old son, William, as well as a dog and a cat. 

  • 1st: Algebra 2 ESL  
    2nd: Math Models ESL  
    3rd: Learning Lab  
    4th: Math Models ESL
    5th: Geometry ESL
    6th: Conference Period  
    7th: Math Models ESL
  • Math Models Tutorials: Wednesday mornings 8:15 - 8:45

    Algebra 2 Tutorials: Thursday mornings 8:15 - 8:45

    Geometry Tutorials By Appointment