Phone: 469-752-7102


Degrees and Certifications:

Bachelor of Science in Biochemistry, Texas A&M University 7-12 Science Certification

Mrs. Mary Freisner


My name is Mary Freisner and I teach 8th grade Science at Murphy Middle School. This will be my third year teaching at Murphy- GO MAVERICKS! I am looking forward to also serving as the Science Department Head and Science Fair Coordinator this year. Any former students will know me as Ms. Casillas; I got married last fall and am excited about starting the school year with a new name!

I grew up in Plano, TX and graduated from PSHS in 2014. I then studied Biochemistry and Art at Texas A&M University and graduated in 2018.

Please feel free to contact me by email or phone if you have any questions or concerns.



  • Class Schedule

    1st period- Honors 8th Grade Science

    2nd period- 8th Grade Science  

    3rd period- Planning + Conference

    4th period- 8th Grade Science  

    5th period - Advisory

    6th period - 8th Grade Science  

    7th period- Honors 8th Grade Science  

    8th period - Honors 8th Grade Science  

  • Tutorial Schedule

    Wednesday 7:50 am - 8:15 am  &  3:30 - 4:00 pm

    Alternate tutorial times may be made by appointment.