Be a Part of Something Bigger, Join the PTA Today! 

 

At Rancho San Joaquin Middle School, we believe that when parents and schools work together, amazing things happen for all our students. That’s where the PTA comes in.



The Parent Teacher Association (PTA) is a powerful network of parents, teachers, and advocates working together to give every child the best possible education and school experience. From classroom supplies and enrichment programs to family events and academic support, PTA funding makes it all possible.

 

Your membership and donation go even further.  You're not only helping right here at Rancho, you’re also supporting the National PTA, which fights to protect every child’s access to quality education.



Why join and donate? 

 

  • You'll be directly improving your child’s school experience. 

 

  • You’ll help fund programs and events they’ll love

 

  • You’ll show them that community matters.

 

  • And yes, you’ll be part of a movement that stands up for kids across the nation

 

Whether it's $10 or $100, every donation makes a difference.  And your membership means your voice is added to thousands more who care about our children’s future. We are so thankful to the families who have already joined us. If you haven’t yet, this is your moment.

 

Join the PTA. Make a donation. Be the change.



Watch this short video to see the impact you can be part of…

 

 

 

Executive Board Email Roster | 2025–2026

 

Our PTA is a dedicated team of parents and teachers who generously volunteer their time and talents to support our school community. The individuals listed below have stepped up to lead this year, and we’re grateful for their service.

 

Get to know their names and faces and don’t hesitate to reach out if you have any questions or ideas. We’re here for you!

 



President - Mahsheed Hosseini

 

Mahsheed Hosseini is this year’s PTA President and a proud mom of two boys, an 8th grader at Rancho and a 5th grader at Alderwood. Since moving to Irvine in 2018, she and her family have enjoyed being part of the city’s diverse and welcoming community. Mahsheed served as PTA President at Alderwood for the past two years and as Auditor at Rancho last year. She is excited to continue serving and working alongside families to help strengthen the school community.

 

A personal message from Mahsheed:

“I encourage all families to join the PTA and be part of building something meaningful together, for all our students and their families.”


 

 

EVP - Katherine Santoso

 

Katherine is a proud mom of two boys—her older son is in 11th grade at University High School, and her younger one is in 8th grade at Rancho Middle School. This year, she’s happily serving as the Executive Vice President for the Rancho PTA, staying involved and connected with the school community. When she’s not busy with family and PTA work, she loves baking and cooking for her loved ones, enjoying the simple joy of sharing homemade treats and meals.

 

 

 

Corresponding Secretary - Angela Tang

 

I have an 8th grader and a 9th grader. Originally from Taiwan, Irvine has been my home for over 20 years. I am dedicated to raising healthy kids, physically and mentally. Our home school is University Park. I love to go outside and play Pokemon Go.

 

 

 

Parliamentarian - Will Yeh

 

Hi Everyone,

I’m originally from the Bay Area and now have been an Irvine resident for about 20 years. I have a college age daughter and my younger daughter Skylar will be in 8th grader this year. In my spare time I coach girls flag football with Skylar’s team.

 

 

Treasurer - Staci Castillo

 

Staci Castillo is the PTA Treasurer and an active parent in the school community. She works in compliance for Human Resources at Wells Fargo, bringing a detail-oriented and collaborative approach to her volunteer work. Staci is married to her husband, Aaron, and their daughter Kalei is currently in 8th grade. In her free time, Staci enjoys supporting Kalei at her softball games and the other activities she is involved in.


 

 

Financial Reviewer - David Chui

 

David is enjoying his second parental journey through Rancho. Originally from the New York area, Irvine has been home for 14 years. When not at his day job, he can often be found at his daughters’ music and sports events.

 

 

Financial Secretary - Katie Olson

Hello, my name is Katie Olson and I have been a PTA volunteer for the past ten years. I am excited to serve as Financial Secretary for Rancho Middle School this year. I have two son's, one is in 8th grade (Rancho Middle School) and one is in 9th grade (Uni High School). I look forward to serving our community & working together this year.

 

 

 

Recording Secretary - Jori Mendivil

 

Hi! I'm Jori Mendivil and I'm this year's recording secretary which means I take all of the notes at all of the PTA meetings! I have an 8th grader at Rancho and have had two older kids go through Rancho and on through University HS. Our home school is Bonita Canyon.  I love getting outside for exercise and you might catch me on one of the local hiking trails or walking the Turtle Rock loop!

 

 

VP Membership – Marina Kahana

 

Hi Rancho families! My name is Marina Kahana and I am the VP of membership for the 2025-2026 school year. ! I have 3 kids - one at Rancho, one at University High School, and one in college at the University of Washington. I’m originally from the suburbs of Chicago and we have lived in Irvine since 2001. I’m looking forward to building a vibrant community of Rancho families and working together to help our kids thrive!

 

 

 

VP Sponsorship – Tiffany Chang

 

 

Historian – Maria Augusta Changsek

 

My name is Maria Augusta Changsek, my daughter Kami is an incoming 7th grader and I look forward to help the community grow in our school.