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  Professor McGongall

Professor Dumbledore

Administrator's Page

Administrator (Principal)

Hello Students and Families,

Welcome to the 2020-2021 school year at Iron House Elementary School. I am excited and honored to introduce myself as the Principal of Iron House. I look forward to working in partnership with you and the staff at Iron House in making this a great year for our students. 

At Iron House, we strive to ensure academic success for all of our students by providing a safe environment for all, where all feel welcomed, respected and valued.

We believe in:

  • Setting goals and high expectations for the success of all of our students
  • Following the ‘Golden Rule’
  • Standing up for what is right
  • Purposefully creating and maintaining a safe environment
  • Appreciating and celebrating differences 
  • Partnering with parents for the success of our students

In addition, Oakley Union Elementary School District is grounded in the principle of providing a positive school climate and culture. Thus, all students in the district will be taught the principles of the 3 Bs - “Be Safe, Be Respectful and Be Responsible.” Students are encouraged to follow these three basic principles in all aspects of their lives, both at home and here at school.

With a strong partnership and communication between home and school, every student can meet and exceed expectations! Please expect regular communication from Iron House teachers and staff to help ensure your student’s success. Also, please feel free to call or email us when you have a question or concern. 

Again, we look forward to your partnership this year to ensure your student’s success.

Diana Masuzumi
Principal, Iron House School



Co-Administrator (Vice Principal)


I am your new Co-Administrator for Iron House Elementary. In addition to working with your amazing kids, I am also the
Co-Administrator for Delta Vista Middle right next door. I bring 14 years of experience as a classroom teacher, department leader, and school administrator focused on equity, student advocacy, culture/community building, and disrupting racism and systems of oppression in our schools.

I hold my Masters of Science in Education Leadership from Cal State East Bay and my Administrative Credential from University of California Berkeley with a focus in Equity and Disproportionality.

In a time when nothing looks or feels familiar, it is so important to create a sense of stability, reliability, and consistency for our students and families. We as a school family are excited to meet these new challenges and make your student’s academic progress, social emotional development, physical health, and self-efficacy a priority.

Outside of school I am a die-hard San Francisco Giants fan and lover of all baseball. I am fortunate to enjoy a wonderful life with my wife and two children. I love reading (especially Steinbeck and Seuss), playing the drums and guitar, cooking, hugging and playing with my kiddos, and spending time with my friends and family. 

I wish you all great health and look forward to working with you and your amazing kiddos!

Joel Miner

Co-Admin Iron House
925.625.6840 ext. 4775