Ana Cox

Ana grew up in Torreon, Coahuila Mexico.  She came to the United States 14 years ago.  Ever since she was a young girl, Ana knew she wanted to be a teacher.  She got her teaching license in Elementary Education four years ago from the University of Colorado.  Ana enjoys teaching first grade because she loves to see the children grow academically and emotionally throughout the school year.


Ana enjoys being with her immediate family in her free time.  She also loves to read and watch movies.  Her mother and sisters live in Mexico and she returns every December and summer to visit them.


Chris Mueller

Chris comes from a Foreign Service family and grew up outside of the United States, until she went to university.  She has a B.A. in Geology and Anthropology from the University of Colorado and an M.S. in Geology from the University of Wyoming.  After many years as a volunteer and tutor at Pioneer, Chris decided helping children learn was her true passion.   She got her teaching license three years ago and has enjoyed teaching first grade at Pioneer ever since. 


Chris loves to travel, read and hike.  She is the proud mom of two amazing girls and two lovable, clumsy cats.

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Patty Delgado 


Sandy Sirepisios

Sandy grew up in Chicago Illinois.  She has a B.A. in Human Services and Psychology from National-Louis University at Chicago and a Masters of Arts in Elementary Education.  Sandy has been teaching for 17 years and loves teaching First grade at Pioneer.


Sandy enjoys traveling, cooking, gardening, reading, biking and going on nature walks.  She loves spending time with family and friends and doing volunteer work in Denver.


Her other hobbies are building Lego’s with her 9 year old son and playing with their 2 gerbils Coco and Butterscotch.




Boulder Valley School District   Escuela BilingÜE Pioneer Staff    Education Center / 6500 Arapahoe, Boulder, Co 80303 / 303-447-1010
©2012 Boulder Valley School District