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School Leadership

Sandy O'Brien

Sandy O'Brien

Expansion Coordinator

Mobile: 414-232-0841


  • Masters in Curriculum & Instruction from National Louis University
  • BS in Early Childhood and Elementary Education from University of Wisconsin - Milwaukee
  • Associate of Arts from Bethany Lutheran College
  • Reading Teacher Certification Program at University of Wisconsin - Milwaukee
  • Administration Certification Program at Concordia University

How did you connect to St. Marcus?

My husband, Mike, and I have been members at St. Marcus Lutheran Church since 1991. I was a public school educator for 25 years; however, I always wanted to serve in a Christian school. I was blessed to join the St. Marcus Lutheran School staff in 2009. It is my joy to serve as an administrator in this Christ-based school.

What do you love about what you do?

I love working to ensure that our school has programs that are necessary to ensure that every student, including students with special needs, can be successful.

If you had a Bible passage/quote for your life and ministry what would it be?

“And we know that in all things God works for the good of those who love him, who have been called according to his purpose.” -Romans 8:28

Tell us about your family…

I have been married to Mike for over 25 years. We have a total of 5 grandchildren. Our oldest son, Cullen, and his wife, Maria, have twins: McCoy and Clara. Our youngest son, Jason, and his wife, Holly, have three children: Annabelle, Monty, and Josie. We are blessed that they live in the Milwaukee area. This gives us the opportunity to provide childcare, attend their many activities and have many sleepovers. They enrich our lives in so many ways. Our grandchildren are truly gifts from our God. 

“When I have free time, you will find me…”

Outside on my deck, on a golf course, biking or walking. If I have to be indoors you might find me reading, coffee-clutching with Mike (my husband), or spending time with my five grandchildren.

What’s your favorite vacation spot?

Door County

What’s one fun fact about you?

I grew up in Chicago.