Degrees and Certifications:

Bachelors of Arts - Accounting TEA Certifications 4-8 Generalist 4-8 Math 6-12 Business & Finance ESL & Special Education Supplemental Certified Public Accountant

Mr. Justin Hartshorn


I'm Justin Hartshorn the 6th grade math teacher for STEM students, teaching both 6th Math Honors and HAM classes. Previously I taught 6th Science at the STEM Academy and grades 5-8 at Buckner Fanning School at Mission Springs. In addition, I have taught STEM electives and for a couple years coached a middle school basketball team.

Teaching is my second career. Previously I worked in the accounting field after graduating from Southwestern University in Georgetown, Texas, and have a CPA license. I worked at Arthur Andersen, Southwest Airlines and Rackspace prior to changing careers to become a teacher.

Here's a bit about myself. I am married to a music teacher, and we have two teenage sons. I was born in Singapore, and moved to McAllen in South Texas when I was younger. I enjoy the outdoors, particularly hiking and playing tennis, as well as traveling.

  • Class Schedule

    1st Period - 6th Math Honors/GT

    2nd Period - 6th Math Honors

    3rd Period - 6th HAM/GT

    4th Period - 6th HAM/GT


    5th Period - 6th Math Honors

    6th Period - 6th Math Honors

    7th Period - Planning Period

    8th Period - 6th Math Honors

    Link to Bell Schedule on STEM Website

  • Tutoring Times:

    Wednesday 3:50pm - 4:15pm

    Friday          7:45am - 8:15am

    Contact Info.: