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Welcome to Dr. O'Brien's Chemistry Page


Grades will be posted to the Infinite Campus Portal. Please visit  to access the portal. For help with parent portal access, please email [email protected]   


About Me

Contact Info:
Dr. Stephanie O'Brien 
Phone: 631-912-2099 X52187
About me: 
I have been teaching at Commack High School for fourteen years. The teaching landscape is constantly evolving. I enjoy finding new means to bring the content to you, most recently through flipped instruction and Google Classroom. I am a lead teacher for advanced programs and advisor to Science Honor Society. Additionally, I am the director at large for chemistry for the Science Teachers Association of New York State.  


Education: I attended Stony Brook University for both my undergraduate and graduate degrees, obtaining a bachelors in chemistry and a minor in biology. I have a masters in teaching science and Ph.D. in science education and my research examined  ways teachers transform their content knowledge into a form that is accessible to students in the domain of high school chemistry (topic specific pedagogical content knowledge).

Outside of school: I present and attend numerous hours of professional development and am constantly looking for new ways to help make your chemistry experience something not just tolerable but memorable, not just because stuff gets blown up, but because you were challenged to think and learn in an innovative setting. I am a New York State Master Teacher which  means I get to collaborate with some other really awesome teachers on how to make the learning in our classroom authentic and effective.  I am a mom of four and enjoy playing softball and yoga.

Class News

Please join our class Remind to get updates regarding homework. 
Please complete contact information form: Click Here
Extra help is every Thursday after school and by appointment in lab 9B.  
Please see the calendar for upcoming tests and quizzes.  

Class Photos

Class Links

Contact Information
By Mail:  1 Scholar Lane Commack, NY 11725
By Phone:  (631) 912-2100
By Email: [email protected]
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