Phone: 972-843-6551


Degrees and Certifications:

BS in Mathematics Certification : Mathematics 7-12 Google 1 Certified

Ms. Tonja Deroy

My name is Tonja Deroy. I grew up in Mesquite, Texas and graduated from A&M Commerce in 2015 with a Bachelors in Mathematics.  I am beginning my fith year at CHS and am excited about continuing to be a part of brave nation.  I teach Algebra 1 and Pre-AP Algebra 2. 

I am always available by email at or by phone at 972-843-6551.  I am also have conference on Tuesday and Thursday from 11:55-1:25 and offer tutoring during lunch time.