Board & Staff

Interim Executive Director


Sarena Lawrence first became involved in El Sistema in 2013 when her daughter joined the orchestra. After seeing the powerful impact music instruction can have on youth, she began supporting the program by developing fundraising opportunities for the families. She has since applied her experience running organizations dedicated to youth development by becoming El Sistema’s Assistant Director. In addition to working with El Sistema, Sarena also is Client Coordinator at Pace Autism where she conducts therapy sessions with autistic children and coordinates group activities and outings. She grew up and continues to live in Waukesha with her husband and two children.

Instructors 2018-2019

Heather Caldwell-Olson

Ms. Heather is a trained Suzuki level one and two instructor.  She began her teaching career with her son, Finn, who joined El Sistema in 2015.  Heather is a talented musician who plays violin, viola and cello.  Heather has an affinity for working with and relating to young people.  Heather’s teaching experience with GMES led her to work as the elementary strings teacher at Montessori School of Waukesha.  Heather teaches private string lessons in addition to her work caring for her four musical children.

Casey Arnold Violin, Viola, Cello

Casey is a talented instrumental musician and singer.  Casey began her work with El Sistema in 2015 as a volunteer.  In 2016 Casey was invited to be a teaching assistant and co-taught the Summer Community Connections Program.  Casey is a loved and respected teacher with our students.  She continues her work as a musician in the community in choirs and performing at weddings.

Alina Vasquez, Cello

Alina has a Ph.D. in music.  She she has a huge heart for children and music education.  Alina is a talented cellist.  She performs with the Sheboygan Symphony and also teaches privately at Hartland Music.

Board of Directors

  • Abby Lorenz, President
  • Ashley Rewolinski, Vice-President
  • Susan Goldstone, Treasurer
  • Michelle Krauska, Secretary
  • Jean Ericson
  • Kathy Gylvin
  • Karen Patrick
  • Debbie Bayee
  • Jose Sanchez