Degrees and Certifications:

Mrs. Ryno

Hi! I am Mrs. Ryno, I teach Chemistry and PreAP Chemistry at CHS this year. I am originally from the Houston area, but have made Corsicana my home for the last 7 years. Please feel free to email me with any questions or concerns at I check email throughout the day and will respond as quickly as I can. 


Click the link below that corresponds with your students schedule:

Chemistry PreAP

Chemistry PreAP - RA (remote learners)


Mrs. Ryno's Schedule

1st  - 8:20 - 9:10 - Chemistry PreAP 

2nd - 9:14 - 9:59 - Chemistry

3rd - 10:03 - 10:48 - RA

4th - 10:52 - 11:37 - conference

5th - 11:41 - 12:49 - Chemistry (C lunch)

6th - 1:23 - 2:08 - Chemistry 

7th - 2:12 - 2:57 - Chemistry PreAP

8th - 3:01 - 3:46 - Chemistry PreAP


How does my child login to Canvas?!

  1. Begin by going to

  2. Choose “AD-Cisd.local"

  3. ”Your student will then login using their CISD username & lunch number. Username is first 5 letters of last name, first 3 letters of first name, and 000. (They have signed into computers at school with this login since Kinder.)SEE USER NAME BELOW FOR INSTRUCTIONS

  4. Once logged in, you’ll see apps for programs like Canvas, Moby Max, iStation, etc.

  5. In Canvas, there will be sections on the dashboard for each class or teacher. Assignments can be found and turned in there by class. 

User name

First 5 letters of the LAST NAME First 3 letters of the FIRST NAME the number 000


My last name is Corsicana

My first name is Tiger

Then I type the numbers


The students password is their student ID or Lunch number.