Mr. Alex O'Brien

Phone: 469 - 219 - 2180 x80443


Degrees and Certifications:

B.S. in business Administration with a concentration in Marketing with a major in mathematics from Trinity University

Mr. Alex O'Brien

Hello and welcome to the 2019-2020 school year!  This is my third year at Prosper High School and my 15th year in education.  My wife and I moved to Prosper in 2015 and we have two sons (2 and 5 years old) and a dog.  I love the Prosper community and am looking forward to a great school year!


This year I will be teaching:

1st:  Pre-AP Pre-Calculus

2nd:  Pre-AP Pre-Calculus

3rd:  Pre-AP Pre-Calculus

5th:  AP Calculus BC

6th:  AP Calculus AB

8th:  Pre-AP Pre-Calculus

My conference periods are 4th and 7th period. 


Classroom materials and assignment can be found on my google classroom site.

If you have any questions about me or my class please feel free to email me at any time (


Meet the teacher night (8/26/19) presentation: Click here 

Pre-Calculus Tutorials
AP Calculus Tutorials