Phone: 210-356-0400


Degrees and Certifications:

BS Business Administration, SFA Teaching Certificate K-12, UTSA

Mr. Derek Canfield

Hello and welcome to a new year!

This is my 25th year with NEISD and second year teaching at Johnson High School. I am looking forward to working with you and helping you succeed this year.

I am excited again to be Teaching Algebra I Resource and co-teaching Algebra I/II this year with Mr. Heim, Ms. Stefan, and Ms. Edwards.  

The best way to contact me is via email:

Thank you,
-Wishing a fantastic year ahead

Mr. Canfield

  • Daily Schedule

    Period 1   Algebra I   RM A218   Co-Teach Ms. Darden
    Period 2   Algebra I   RM A316   Co-Teach Ms. Valles
    Period 3   Conference ----------------------------------------------------
    Period 4   Algebra I Resource RM A263
    Period 5   Lunch -----------------------------------------------------------
    Period 6   Algebra I   RM A361  Co-Teach  Mr. Heim  (split class)
    Period 6   Algebra II  RM A322  In class support Ms. Edwards  (split class)
    Period 7   Algebra I   RM A218  Co-Teach  Ms. Darden
    Period 8   Algebra I   RM A361  Co-Teach  Mr. Heim


    If you need tutoring, I will arrange a time/room to
    meet with you any day of the week, otherwise:
    Monday Afternoon        4:15 - 5:00   Room A361
    Wednesday Afternoon  4:15 - 5:00   Room A361
    Thursday Afternoon      4:15 - 5:00   Room A361
    Friday Morning              8:15 - 8:40  Room A361
    Friday Afternoon           4:15 - 5:00   Room A361

    Don't wait until the last minute.  If you need help,
    there are a ton of resources and teachers available.