Career & Technical Education

1   AP Stats

2   Pre-Calc H

3  AP Stats

4/5   Ed Professions

6  Pre-Calc H

7   Pre-Calc H

I was born in Santa Clara, California and moved to Seattle, Washington when I was 8. I moved to Phoenix in June 2015.

I went to the University of Washington where I earned my BS in Mathematics with a minor in Chemistry.

After graduating, I attended Seattle Pacific University where I earned my Masters in Teaching Math & Science. While earning my masters, I completed a full year of student teaching at Skyline High School in Sammamish, WA where I taught Algebra 1-2 and Pre-Calculus.

For three years, I worked at The Bear Creek School in Redmond, WA where I taught AP Statistics, Geometry, and Algebra 3-4. 

I have worked at Sandra Day O'Connor HS for the past seven years, teaching AP Statistics and Honors Geometry. I have also taught Algebra 3-4 Honors and Pre-Calculus Honors for the Deer Valley Online Learning Program (now Aspire). In addition, I teach Middle & High School Competitive Mathematics with the Johns Hopkins CTY program.

1   JROTC 7-8

2   JROTC 1-2

3  JROTC 3-4 / 5-6 

4/5   JROTC 1-2 / 3-4 / 5-6

6  JROTC 5-6

7   Prep

I spent 23 years in the Air Force as a Combat Arms Weapons Instructor, Security Policeman, and First Sergeant until I retired in September of 2011. While the Air Force has sent me all over the world, my most memorable assignments were at Royal Air Force (RAF) Lakenheath/Feltwell, England and Spangdahlem Air Base, Germany. I was a civilian police officer for the Department of the Air Force after I retired before following my passion to teach. I started teaching Middle School Special Needs and General Science until I finally found a home here at Sandra Day O'Connor in the Air Force Junior ROTC program. This is my 8th year at OC and I look forward to many more rememberable and enjoyable years to come. 

5  Marketing

6  Marketing

7  Marketing

1   Early Childhood

2   Adv Early Childhood

3  Early Childhood

4/5   Early Childhood

6  Early Childhood

7   Adv Early Childhood

I am the Early Childhood Education teacher at Sandra Day O'Connor High School.  I previously worked in the field of Early Childhood Education teaching preschool for over 12 years at Eagles Nest Preschool (located on the campus of Sandra Day O'Connor). I have 3 beautiful daughters and one grandson. I have been married for over 34 years to my wonderful husband, Jay.  When I'm not teaching, I love spending time with my family and friends.  I am excited to be teaching Early Childhood Education and look forward to a great year.

1   Intro Sports Med

2   Prep

3    NASM

4/5   Intro Sports Med

6    Intro Sports Med

7      Intro Sports Med

I have been teaching since 2006 and have experience in elementary, middle, and high school PE. Most recently, I served as an athletic director before joining O’Connor High School last year. Alongside teaching Sports Medicine, I’ve spent two decades coaching baseball and am currently an assistant varsity coach. I hold a bachelor’s in Physical Education, a post-baccalaureate in Secondary Education, and a NASM Personal Training certification. Outside of school, I enjoy fishing, golf, and music, and I’m passionate about helping students build lifelong fitness habits while having fun.

Zero Hour  Govt

1     Govt

2     Govt

3        Govt (TT Smith 1st Sem)

4/5      Prep

6         eSports

7        

Mr. DeVito
I graduated from Sandra Day O'Connor High School in 2011 and returned in 2021 to begin my teaching career here. I earned my Bachelor's degree in Sociology and Criminal Justice from the University of Mary and later completed my Master's degree in Secondary Education Social Science from the University of Ottawa in Kansas. I’ve been the head wrestling coach at OC since 2015 and also coach football, flag football, and esports. Outside of school, I enjoy sports, gaming, and spending time with my family.

1   Adv. Dig Comm (508/419)

2   AP LIT

3  COM 100

4/5    Intro Dig Comm

6   Prep

7     AP Seminar

I am honored to be teaching at Sandra Day O'Connor! The 2021-2022 school year will mark my 20th year teaching. Previously, I taught at Saguaro High School in Scottsdale. In 2015, I was Deer Valley Unified School District's Teacher of the Year, which was a huge honor and blessing. In addition, I am the recipient of Rio Salado's 2015-2016 Outstanding Adjunct Faculty Award.I currently teach ELA 7-8, COM 100, Creative Writing, Intro to Journalism and Digital Communication, and Newspaper. I am also the Educational Technology Department Chair. I was raised in Illinois and attended the University of Illinois (Go Illini!!) where I received my Bachelor of Arts degree. After living in Santa Barbara, California for two years, I decided to move back to Illinois to obtain my Master of Arts degree from Barat College of DePaul University. Fun fact is my husband also works at OC as lead security and is a freshman football coach! We live in the Deer Valley School District, and we love the Valley of the Sun! We have two beautiful children named Callie and Shay, two dogs named Gracie Rae and Oakley. I have always been an avid learner; subsequently, my goal is to foster a classroom where a love for learning thrives. Empower yourself through learning.

1   Int/Adv Graphic

2   Int/Adv Graphic

3  Graphic Design

4/5   Graphic Design

6     Graphic Design

7     Graphic Design

My love for photography naturally led me to the world of graphic design. When I first learned Photoshop back in 1997, it ignited a continuous journey of creativity and innovation. 

Over the years, I have designed graphics, logos, business cards, magazine spreads, compositions, newsletters, and websites for various individuals and businesses. 

I also enjoy taking photos of pets, transforming them into personalized artwork. 

With a master’s degree in instructional technology, I now channel my skills into designing online courses, blending my passion for visual art with educational technology.

1   Adv Account

2   Account / Vita

3  Account

4/5    Account

6    Prep

7     Account

Be reasonable, responsible, respectful human beings. 

What does this look like? 

• Be present and on time to class every day. 

• Bring learning materials every day.

• Participate.

• Respect other People and their Property at all times.

• Respect all classroom equipment.

• Only water bottles in my classroom! This is SO IMPORTANT in our computer lab. I ask students to leave any open containers on the back table in my classroom.

All SDOHS Student Handbook Rules will be enforced.  No Exceptions.

1   Film & TV Production

2   Int/Adv Media Pro

3  Prep

4/5     Film & TV Production

6    Film & TV Production

7     Film & TV Production

I have been working in public education since 2011. During that time I have been blessed to teach a variety of different courses, including Biology, Leadership & Communications, World History, and Film & TV Production. I love the opportunity to help our students learn more about themselves, the world they live in, and the passions and interests they want to pursue. I believe that Film & TV Production is uniquely suited to helping students express themselves and find joy and fulfillment in their own cinematic creations.

1   Adv Sports Med

2    PT Tech

3    Intro Sports Med

4/5     PT Tech

6     Intro Sports Med

7     Prep

Hello! My name is Cassandra Sahagun and I started teaching at SDOHS in 2023. I am a certified and licensed Athletic Trainer who graduated from Grand Canyon University, (where I was also a student intern at SDOHS in 2021) with a Bachelor's Degree of Science in Athletic Training, and I am also CPR & First Aid Certified. I enjoy being outdoors, hiking, going to the gym, watching football (Go Niners!) and listening to music. I am born and raised in Arizona and have worked athletic training wise with Phoenix Rising (USL Soccer), BMX, the Milwaukee Brewer's (volunteer), and various high school sports along with D1 Swim & Dive and Softball.

1   Theatre 1-2

2   Theatre 3-4

3  Prep

4/5   Theatre 1-2

6    Stage Production / Adv

7   Adv Theatre

I have been involved in theatre my entire life in some capacity and found enjoyment in lighting design and theatre teaching. I have a Bachelor of Fine Arts Degree in Theatre, a minor in English, and a secondary education teaching certification from Arizona State University. My goal is to foster a collaborative environment where students can learn real world skills, build confidence, and develop critical thinking skills through the performing arts. I'm excited to help students discover all aspects of theatre, whether they're stepping into the spotlight or mastering the intricacies of stage production and design. 
Outside of theatre, I love to hang out with my pets and family. I also love to read, play video games, and craft!

1   Prep

2   Intro Sports Med

3     Adv Sports Med

4/5     Adv Sports Med

6    Adv Sports Med

7     Intro Sports Med

Hello, my name is Coach S and I teach Intro to Sports Medicine & Advanced Sports Medicine here at SDOHS.

I attended DVUSD K - 12 and graduated from Deer Valley High School where I participated in football, wrestling, and track/field. My father was a teacher in the district for almost 40 years, and my mother was a teacher for 35 years. I graduated from Southern Oregon University with a Bachelor of Science in Health and Physical Education, where I competed in wrestling and rugby. I attained my Masters through ASU in Secondary Education. 

1   Marketing

2   Adv/Int Arch Design

3    Adv/Int Arch Design

4/5    STUGO

6    Int Arch Design

7     Int Arch Design

About Mrs. Tessmer: 16th year teaching at SDOHS. 13th year as the FCCLA advisor. Graduated from NAU with a bachelors degree in Interior Design.  I teach: Student Government, Stage production 1/2 and 3/4, Interior Design 1/2, 3/4 and 5/6. Email is the best way to get ahold of me.

1   Prep

2   AP CS A

3    AP CS A

4/5     AP CSP

6    AP Cyber 1

7     AP CSP

1   JROTC 7-8

2   JROTC 1-2

3  JROTC 3-4 / 5-6

4/5   JROTC 1-2 / 3-4 / 5-6

6  JROTC 5-6

7   Prep

1   APEX Credit Recovery

2   AP Calc AB

3    AP Calc BC

4/5     AP Calc BC

6     eSports

7     AP Calc AB

Mr. Williams has been teaching mathematics for many years and brings a wealth of experience and passion to the classroom. He currently teaches AP Calculus AB and BC, where he challenges students to reach their highest potential through deep understanding, critical thinking, and problem-solving.

Outside of the classroom, Mr. Williams is also the coach of the boys' golf team and the school's E-sports team, combining his love of competition and mentorship in both traditional and digital arenas.

What excites him most about teaching is the opportunity to help students not only learn math but build their confidence, develop independence, and become strong thinkers who can tackle problems both in and out of the classroom. He believes that with the right support and mindset, every student can grow and succeed.