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Contact Information


Mrs. Crystal Castaneda, Principal
Heidi Wise, Office Manager

(925) 335-5830

Fax:(925) 335-5891

Woodbridge - On-site Day Care

(925) 228-0672


Parent Student Handbook

Parent Student Handbook-Spanish

My School Bucks - Deposit breakfast/lunch money online:  http://myschoolbucks.com

​Heartland Apps - online application ​http://martinezusd.heartlandapps.com

LJE Cookbook

Click here to check out our wonderful cookbook!

Firearm Storage

Parents and Guardians,

Please read this important information regarding firearm storage and keeping your child save.

Firearm storage

The first day of school is Tuesday, August 25

Lunch Price Increase

Dear Parents and Guardians,

In an effort to keep up with the Federal Equity Pricing Standard, we will be increasing our elementary lunch price; the price will be $0.45 bringing the cost of the lunch meal from $2.55 to $3.00.  The increase will take effect on the first day of school, August 25, 2015.

We hope that you continue to support our food service program as the meals are still a great value and in compliance with the Healthy Hunger Free Kids act.

Thank you for your understanding and support.

Martinez Unified School District Food Service Program

Important Check-In-Day Information

Dear LJE Families,

Happy August! Hopefully you are enjoying some fun with family and friends this summer. The staff is excited to see you back at Las Juntas this fall.  Before you come to Check-In-Day we ask that you follow the online instructions and complete the registration process for your child.

Once again we will be using the Aeries Parent Portal to update student information online. All parents should go to http://www.martinezusd.net/reg.html, and complete the steps below before August 24th.

  • Click the link under "Returning Students"
  • Login with your email address.  If you’ve forgotten your password (or never received it) simply click the “Forgot Password?” link on the login screen and it will be sent to your email.  
    Please note: If your email address has changed or is incorrect, please call the office manager, Heidi at 335-5830 x 0
  • After logging in, you will see a message stating “You have not yet completed the Student Data Confirmation Process, Click Here to confirm…”   Click the link.
  • Verify the registration information on each of the tabs.  When you get to the documents tab, please print the "Annual Rights Notification Signature Page" and bring it with you to registration.
    Please note: You must click on each tab (Contacts, Medical Information, etc.) and confirm or correct all the data before you can complete the process.
  • Click “Save” on the “Final Data Confirmation” tab.  
    Please note that if you have more than one student enrolled in the district, it will be necessary to complete this process for all other students by clicking the “Change Student” link, selecting the next student, and repeating the steps above. 

If you experience any technical difficulties with this process, please call our technology help desk at

335-5940. If you need to update your email address, please call the office manager, Heidi at 335-5830 x 0.


Please join us for Las Juntas Check-In Day

Monday, August 24th 3pm-6pm in the Multi-Use Room

Classroom and Teacher Assignments will be handed out at Check-In Day


All parents and students are encouraged to attend Check- In Day. Come see old friends, meet new friends, take care of important paperwork, preview/order new Bullpup spirit wear and get your classroom and teacher assignment.

First day of school is Tuesday, August 25th1st-5th grade students attend 8:15AM - 2:35 PM (WEDNESDAYS is Early Release and grades 1-5 are dismissed at 1:30 PM).

Kindergarten students will attend school each day from 8:00 am-11:20 am

Transitional Kindergarten will attend 11:40-3:00 M-T-Th-F (Wednesday 10:10-1:30)

Transitional Kindergarten is for students reaching 5 years of age betweenSeptember 2nd 2015 and December 2nd 2015. Please Enroll at our District Office 921 Susana Street.

Attention Incoming 2nd Grade Students- Each year the Martinez Masonic Lodge gives out new backpacks through their Bags For Kids Program. All 2nd grade students will receive a backpack towards the beginning of the school year!!

We are excited to share an amazing year of learning and growing together at Las Juntas. We look forward to seeing you on August 24th. Have a wonderful rest of your summer!



Mrs. Crystal Castaneda

CA Physical Education Requirement Accountability

Students in grades 1-5, at all four elementary schools in the Martinez Unified School District, actively engage in the California requirement of 200 minutes of Physical Education every 10 days.  In order to assure compliance with this legal requirement, each site has established “Prep C” protocols for those grade levels that may not reach the 200 minute requirements due to minimum days, teacher prep, and / or assemblies.  These established practices of running laps, dance & movement, and cardio-conditioning outside of the PE class are documented and verified by the site administration on a monthly basis.

Information on Measles

A letter from Erika Jenssen MPH, Communicable Disease Program Chief.  Click hereen Español

Understanding the New K-5 Report Card

For more information Click here

Program Improvement Information

Staying Healthy During Cold and Flu Season

As we head into the cold and flu season it is important that parents know there are measures they can take to help keep their families healthy and to prevent the spread of cold viruses and influenza at school and in the greater community.  Please read the following information on how to keep your child healthy.  Click here

Las Juntas Elementary School Calendar

Fact Sheets on Ebola

It is important to know that there are no reported cases of Ebola in Contra Costa County, or anywhere in California, and the risk is very low. But there are plans in place to contain the disease and protect the public in the unlikely event of a local case.  Here is a letter from Contra Costa Health Services Department and a fact sheet in English and a fact sheet in Spanish.


Bullpups Spirit Wear

Order your school spirit wear from SpiritGearDirect.com.  Click here for the website and to place your order.