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NISD's mission is to provide all NISD students who are eligible to ride the bus a safe, efficient, nurturing environment that supports the educational and extra-curricular objectives of the district.


Northside ISD continues to enforce its “No Shots, No School” policy. Texas law requires all public school children have current immunizations in order to attend class.

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School Colors: Red, white

Rosie Siller, Principal of Herbert G. Boldt Elementary
Rosie Siller - Principal
Rosie Siller has been in education for over 24 years and is the proud Principal at Herbert G. Boldt Elementary. Before coming to Boldt, she had the pleasure of being the Principal at Cable Elementary for over ten years. Mrs. Siller also served as Vice Principal at Julia Newton Aue Elementary and Lackland City Elementary, know renamed Jerry D. Allen Elementary, both in the Northside Independent School District. Her experience includes
being a Reading Specialist at Bob Lewis Elementary and a 7th/8th grade Reading/Language Arts teacher at Horace Mann Middle School in San Antonio Independent School District.

Mrs. Siller grew up in Pearsall, Texas and graduated from Pearsall High School. After graduation, she attended St. Mary's University and received a Bachelor of Arts, Interdisciplinary Reading. She continued her professional growth and earned two master's degrees in Reading
and Educational Leadership from St. Mary's University.

She takes pride in getting to know everyone in the Boldt community. Her dedication and passion is evident as she continues the tradition of success at Boldt. Her belief is that each student deserves to be empowered through their education and each child is indeed a lifelong leader and learner. Though an administrator, her heart is in the classroom.

She was a board member for Girls on the Run a national organization that inspires girls to be joyful, healthy and confident using a fun, experience-based curriculum which creatively integrates running. She is also a board member for the Education Advisory Committee at St. Mary’s

Though her focus has always been and will be education, she could not do what she loves without the support and love of her family. Her husband Ernest Vasquez is a Colonel in the U.S. Air Force Reserve currently serving on Active Duty in addition to being a Director of
Infrastructure in Technology Services at Northside ISD. They have 4 children, Matt, a Data Engineer, Josh, a student at The University of Texas at Austin, Maddie, a student at St. Mary’s University, and Bryson, a senor at Clark High School.

She is an avid runner having participated in the San Antonio Rock and Roll Half Marathon and local 5K’s.
Melissa Spiekerman, Vice Principal of Herbert G. Boldt Elementary
Melissa Spiekerman - Vice Principal

The Vice-Principal also serves as the Campus Behavior Coordinator. They can be reached by email at or by phone at (210) 398-2015.

Howdy Mavericks! I’m Melissa Spiekerman, the Vice Principal of Boldt Elementary. In January of 2019, I was honored by being named as one of the administrators of this incredible elementary school. From the moment I walked in the front door on the day of my interview, I knew within the first three minutes, I was home. Here I was, walking in the front door, not knowing one person, and I was greeted with smiles and kind greetings from the students, staff and community. What an incredible day that was!

I have been in education for over eleven years. I graduated from Southwest Texas State University with my Bachelor’s Degree and then received my Master’s from UTSA. I taught third and fifth grade at Bob Beard Elementary and then continued with fifth grade at Raul B. Fernandez Elementary, both within NISD. I have been blessed beyond measure with my life. My late husband, Mark, and I have three beautiful children whom I am so very proud of who they have become. Our eldest, Emily, is at Texas A&M University in College Station, majoring in Biomedical Science and is absolutely having an incredible experience there as she is becoming such an independent, confident, service-driven, and compassionate young woman. Our middle child, Douglas, is a senior at O’Connor High School in Northside, and is doing remarkably well. He is still debating which college he will attend, and is very interested in becoming a SAFD firefighter. I have loved seeing him grow into an incredible young man that I am honored to call my son. Abby is our youngest. She is in the seventh grade at Folks Middle School in Northside. She has and always will be our blessing. She is my most social child that loves helping others and being with her friends. She enjoys playing volleyball, loves her dog and has recently agreed to show pigs in high school!

Over the years, I have found that my foundational belief in not only education, but in life itself, is the ability to forge meaningful relationships with others. I believe by being intentional and present in every opportunity with other students, colleagues, and community members, will allow me to learn about each and every person. Please do not hesitate to contact me. I look forward to working with you as we collaborate on doing what is best for our kids.
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