CAST Teach student reading to a group of younger students.


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Working together for student academic success by providing nutritious meals in a cost effective and pleasant environment.


 District calendars are listed and approved two years in advance. For individual schools, only campuses with Google Calendars are featured here.


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.

Campus Information

Year Open:

School Mascot: Falcons

Mission Statement:
Co-create learning experiences within and beyond the classroom in order to maximize options for students and prepare them for future careers in education.

Transforming Education. Transforming Our Community.

Ericka Olivarez
Ericka Olivarez - Principal
Ericka Olivarez is guided by a mission to serve as part of a diverse community of learners and leaders striving to ensure that all students have equitable access to educational experiences that will help them succeed. She has dedicated her career in education to growing and empowering others, serving as a teacher, instructional curriculum and assessment specialist, academic dean, district content coordinator and a district leadership specialist. Forever a teacher, she believes that the best way to create a community of leaders is to create a truly equitable environment where all stakeholders are empowered to explore, question, collaborate, and problem-solve in a supportive environment.

A first generation college graduate, Ericka Olivarez earned a Master’s Degree in Educational Leadership and Policy Studies from the University of Texas at Arlington, as well as a Master’s Degree in Political Science from the University of Notre Dame and a Bachelor’s Degree in Political Science and a minor in English Literature from St. Mary’s University of San Antonio. She leads and serves on various state, city and district committees dedicated to building culturally responsive schools where all students and staff are healthy, safe, supported, engaged and challenged.

The Northside ISD CAST Teach High School presents a unique opportunity to develop and empower its students, so that they in turn, as future educators, have a bigger impact on generations to come. Opening in August of 2022, the CAST Teach High School will not only ensure students have a strong foundation in educational practices, it will also provide experiences in schools - side by side with mentor educators, coaches, counselors, and librarians. Mrs. Olivarez’s goal is that our future educators will find their love and passion for this work. In her own words, “This is an opportunity unlike any other - to shape the future of public school education.”

The Associate Principal also serves as the Campus Behavior Coordinator. They can be reached by email at or by phone at 210-397-6465.

Professional portrait of Gabriela Aguilar
Gabriela Aguilar
Programs Coordinator

Gabriela Aguilar was born in Monterrey, Mexico and has dedicated more than 30 years as a teacher and educational leader for levels from preschool to college. In 2010, she came from Mexico to reside in the United States and proudly has served Northside schools since then. Ms. Aguilar is a passionate educator with a vision to grow achievers for life, as she believes in learning as a feeling, speaking not only to students' minds but also to their hearts. 

Ms. Aguilar holds a Bachelor’s Degree in Applied Linguistics and a Bachelor’s Degree in Education from Universidad Autónoma de Nuevo León in Mexico. She holds a Master’s Degree in Education and Family Guidance from Universidad Complutense de Madrid in Spain and a Master’s Degree of Education in Administration from Lamar University. She is a proud mother of three successful young adults who are following her legacy of service in Texas. Ms. Aguilar enjoys playing her piano and illustrating the children’s stories she writes to share her message to young minds. She also keeps herself active as a triathlete and marathon runner.



Professional portrait of CAST Teach Counselor Ivan Castillo
Ivan Castillo

Ivan Castillo is the School Counselor at CAST Teach HS.  An educator of 14 years, his dedication to student success transcends beyond the classroom serving as a teacher, coach, advisor, curriculum writer, summer program coordinator, and school counselor.  

Mr. Castillo, a first generation college graduate, earned a Bachelor of Arts in History from the University of Texas at San Antonio, as well as a Master of Education in School Counseling and a Master of Education in Educational Administration from Lamar University.  A lifelong learner, Mr. Castillo understands the importance of staying knowledgeable on educational trends to better meet the needs of all students.  He is an active member of the Texas School Counseling Association and continually seeks opportunities for professional growth through seminars and conferences.  Mr. Castillo believes that given the opportunity and an equitable environment, all students can reach new levels of creativity and take ownership of their learning. 

Mr. Castillo enjoys traveling, photography, and spending time with family.  In parallel to his work at Northside ISD, Mr. Castillo is an instructor and curriculum writer for the University of Texas at Austin High School.


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