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Our School

PS 503 School Building

We are a District 20 Public School in Sunset Park, Brooklyn. Our warm and inviting community celebrates the diversity and inclusion. PS 503's multilingual and multicultural atmosphere​ amplifies voices of students and families. Our small class sizes and 2+ teachers in each class ensure that all students are seen for their strengths and assets!

Our Community Advocacy

Together our voices have power! PS 503 advocates for our students and families and the greater Sunset Park community.


In 2022, the School Leadership Team, a collaborative group of parents, teachers, and school leaders, and the students from 1st Grade class 1-334 worked with Councilwoman Alexa Aviles to improve the PS 503 school yard! PS 503 secured $1.5 million dollars! SLT also worked to get $2.25 Million to repair the school yard. We selected Trust for Public Land for the work.  TPL will begin the design process with the community Fall 2023 with construction planned for April 2024- September 2024.

In the past, the school has led participatory budgeting campaigns to make important school improvements, such as installing air conditioning in our gym! At PS 503, students learn to advocate for themselves, their class, their school, and their community.

Our Staff

Picture of Nina Demos

Nina Demos


Ms. Demos has been the Principal of PS 503 since 2015. Prior to becoming principal Ms. Demos was a teacher, coach and assistant principal. Ms. Demos is also the proud parent of a PS 503 graduate and a current PS 503 student. As a lifelong resident of Sunset Park Ms. Demos loves feeling connected to the community and seeing students and their families in the neighborhood. Look out to spot her shopping on 5th avenue! When she is not at work, Ms. Demos loves spending time with her friends and family, traveling and going to the beach.

Picture of Brooke Precil

Brooke Precil

Assistant Principal

Ms. Precil has been working at PS 503 since 2007. She has been a special education teacher, a math coach and an assistant principal since 2015. Ms. Precil is also a current PS 503 parent. Ms. Precil's favorite part of the day is hanging out with students and playing with them at recess. In her spare time, Ms. Precil loves to read and watch fantasy series.

Picture of Tu Harris

Tu Harris

Assistant Principal

Ms. Tu has been an educator for over twenty years! She has taught many different grades and subjects and loves working with children and enjoying the lens of wonder and curiosity they bring with them. She delights in working with the early childhood grades, both teachers and students alike, and loves to incorporate play and inquiry into the classroom. "How do we look for more joy?" is a question you will hear from Ms. Tu often. Ms. Tu lives in Brooklyn and enjoys spending time outdoors with her family. The night sky never ceases to amaze her.

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