Mr. Mike O'Brien

Phone: (314) 776-3300


Degrees and Certifications:

B.S.Ed. from UTEP Masters from Lindenwood U

Mr. Mike O'Brien

This is my second year teaching Chemistry-350 at Gateway STEM and I am thrilled to be a Jaguar.  I retired from the Fort Zumwalt School District in 2016 after a 29-year career teaching Chemistry and serving as the Activities/Athletics Director at Fort Zumwalt South High School.  In the summer I taught Physics at the Missouri Scholars Academy onthe Mizzou campus from 1993 to 2000.  In addition to my teaching and administrative duties, I coached Boys and Girls Cross Country, Track, and Boys Swimming and Diving.  I obtained my Bachelor's Degree from the University of Texas at El Paso and my Masters Degree in Seconday School Administration from Lindenwood University.  Before my career in education I served in the U.S. Army as an instructor in the Air Defense School at Fort Bliss, Texas.  My wife Lisa and I reside in O'Fallon, Missouri along with our cat Billy.  I love being a Jaguar and remember...Learners Today, Leaders Tomorrow!



"A" Day Schedule

Period 1: Plan from 7:10 AM till 8:43 AM

Period 2: Chemistry 350

Period 3: Chemistry 350

Period 4: Chemistry 350


"B" Day Schedule

Period 5: Chemistry 350

Period 6: Chemistry 350

Period 7: Plan from 10:56 AM till 12:29 PM

Period 8: Chemistry 350


Follow our classes on Twitter @GChemOB

Course Syllabus