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Contact Info:

Phone:  610-627-6318

Phone: 610-627-6318


  • Bishop Shanahan High School- Downingtown, PA
  • University of Delaware- Newark, DE
    • B.S. in Finance with a minor in Management Information Systems 
  • Cabrini University- Radnor, PA
  • Masters in Education & Secondary (7-12) Mathematics Certification


Teaching Experience:

  • Student Teaching- Great Valley Middle School- Malvern, PA
  • Owen J. Roberts Middle School- Pottstown, PA
  • Penncrest High School- Media, PA



        My name is Erin Warner and I am proud to be a teacher at Penncrest High School.  Below is background information about me and how I ended up here today:


        I grew up in Chester Springs, PA and graduated from Bishop Shanahan High School.  After high school, I went to University of Delaware and earned a degree in Finance with a minor in Management Information Systems.  During the summer leading into my senior, I completed an internship at Vanguard in their Brokerage Services Department and was offered a job for after I graduated from Delaware which I happily accepted.  I worked hard and earned my series 7 and series 63 licenses; however, after 2 years my heart was calling me to teaching.  I left the business field and returned to school full time to complete my masters degree and earn a secondary math certification at Cabrini University.  My student teaching placement was a wonderful experience at Great Valley Middle School and quickly was offered a job at Owen J. Roberts Middle School in Pottstown, PA where I spent 7 years teaching.  After getting married and life taking me to Delaware County, I was extremely lucky to then get a job at Penncrest High School.


      Besides being a math teacher, I am a wife and mother.  I have a husband and three children, who keep me very busy but incredibly happy.  I love to run, do yoga, go to the beach, and spend as much time as possible with my family and friends.

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