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Immediate Dissemination of Emergency Information

2017-2-22_Emergency Communication MemoEmergency Communication Procedures Reminder

Please reada Manteca Unified School District emergency communication procedures. Should an unexpected event, such as sudden severe weather, occur during the school day, our top priority is keeping your children safe.

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Public Alerts

Information is Displayed in Reverse Chronological Order.

Information will be deleted after 1 year.

11-19-2018 at 6:00 PM: Air Advisory Alert Update School Open 11-20

As we continue to monitor the changes in air pollution during the course of the day using RAAN, we are enforcing the physical activity restrictions placed on each child in accordance with ROAR guidelines. At this time, the air quality has shifted to a Level 4 consistently from a Level 5, therefore, all indoor activities may be resumed this includes PE and afterschool activities. No outdoor activities.

For additional information:  

Guidelines that San Joaquin Valley Air Pollution Control District advise schools to follow based on RAAN, NOT on the forecast:



11-18-2018 at 3:00 PM: Air Advisory Alert Update - School Open on 11-19

Thank you for your continued support as we face poor air quality. We want to assure you the wellness and safety of our students and staff remain our top priority.

We understand that you count on us to provide a safe learning environment for your students, and we take this responsibility seriously. All schools will be open tomorrow, Monday, November 19, 2018. The decision to keep schools open was not made lightly. The District has been closely monitoring the San Joaquin Valley Air Pollution Control District’s (Air District) Real-Time Air Advisory Network (RAAN) for updates on the air quality. We have also been closely following the advice and recommendations from San Joaquin County Public Health Services and the San Joaquin County Public Health Officer.

As a government agency in a time of emergency schools provide supervision, security, shelter, and meals to students. We will continue to provide a protected and supervised learning environment. If you are electing to keep your child at home due to air quality issues, we respect your decision. All absences related to air quality concerns will be treated as excused absences.

We will continue to keep you apprised of any new information or change in procedure.

11-16-2018 at 2:23 PM: Air Advisory Alert Update

For many of our students we are the only option in the event of a crisis. We are the government agency that remains open to be a safe shelter. Student safety is our number one priority. We support our parents in their individual decision to keep their child at home, however this is not an option for many of our students.

Additional information:

  • All site filters have been checked and are being maintained in all Heating Ventilation and Air Conditioning Systems, we are actively limiting the outdoor smoke from getting inside as we are able.
  • During a time of crisis schools provide supervision, security, shelter, and meals
  • Schools have plans in place when students have to be indoors
  • Some college campuses in our area have closed, adults on these campuses are able to find appropriate shelter-in-place locations; for many of our students, our schools provide a healthier environment
  • For sensitive student groups we are able to support their needs through our Health Services Resources
  • Elementary and High schools are opening classrooms and gyms to allow all students the ability to eat indoors
  • We are preparing in the event on Monday we need to take alternative action and call for school closure based on guidance from the Public Health Officer. We are in constant communication with the San Joaquin County Office of Education and Public Health.

Please consider revising outdoor activity plans in accordance with air quality conditions and refer to our ROAR activity guidelines, available here:


11-15-2018 at 5:00 pm: Air Advisory Alert Update

The fires around California are an absolute tragedy. Unfortunately, our region is unable to escape the effects and impacts of the smoke from the fires.

MUSD is continuing to monitor the Real-Time Air Advisory Network (RAAN) powered by the San Joaquin Valley Air Pollution Control District and the associated guidelines for outdoor activities. All schools in MUSD will follow our “rainy” day schedule tomorrow and will keep students indoors as much as possible.

San Joaquin County Public Health Officer has made the following recommendation regarding the air quality in San Joaquin County:

  • Masks are NOT recommended;
  • Modified indoor schedule recommended;  
  • There has been NO order for school closure from SJC Public Health Officer

The following are resources and guidelines by the Valley Air District: and (to sign up for real-time alerts).

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Los incendios alrededor de California son una absoluta tragedia. Desafortunadamente, nuestra región no puede escapar los efectos e impactos del humo de los incendios.

MUSD continúa monitoreando la página de Real-Time Air Advisory Network (RAAN) impulsada por el Distrito de Control de Contaminación del Aire del Valle de San Joaquín y los lineamientos asociados para actividades al aire libre. Todas las escuelas en MUSD seguirán nuestro horario de "lluvia" mañana y mantendrán a los estudiantes adentro de clase tanto como sea posible.

El Oficial de Salud Pública del Condado de San Joaquín ha hecho la siguiente recomendación con respecto a la calidad del aire en el Condado de San Joaquín:

  • NO se recomiendan máscaras;
  • Calendario interior modificado recomendado;
  • No ha habido ningún pedido de cierre de la escuela por parte del Oficial de Salud Pública de SJC

Los siguientes son recursos y lineamientos del Distrito Valley Air: y (para inscribirse en alertas en tiempo real).


11-12-2018 at 3:00 pm: Air Advisory Alert

The fires around California are an absolute tragedy. Unfortunately, we are unable to escape the effects and impacts of the smoke from the fires.  

Residents can use the Real-time Air Advisory Network (RAAN) to track air quality at any Valley address by visiting sign up for real-time alerts). The RAAN monitors are designed to detect the microscopic PM2.5 particles that exist in smoke.

School sites will also be monitoring the air quality throughout the week to safely moderate student outdoor activity and our custodial teams are committed to checking air filters around campuses. 

We are dedicated to providing the safest environment for our staff and students. Our thoughts are with those more directly impacted by these events.

For more information, please see below:

Administrative Regulation (AR3514)

Board Policy (BP3514)

See the RAAN Real-Time Outdoor Activity Risk (ROAR) Guidelines - (Lea en Español)

See the San Joaquin County Guide for School Activities During Wildfire Events


Leer en Español

Los incendios alrededor de California son una absoluta tragedia. Desafortunadamente, no podemos escapar de los efectos e impactos del humo de los incendios. 

Los residentes pueden utilizar la Red de Asesoramiento Aéreo en Tiempo Real (RAAN) para rastrear la calidad del aire en cualquier dirección del Valle visitando inscribirse en alertas en tiempo real). Los monitores RAAN están diseñados para detectar las partículas microscópicas PM2.5 que existen en el humo.

Los planteles escolares también monitorearán la calidad del aire durante la semana para moderar de manera segura la actividad de los estudiantes al aire libre y nuestros equipos de conserjes se comprometen a revisar los filtros de aire alrededor de los planteles.

Estamos dedicados a proporcionar el ambiente más seguro para nuestro personal y estudiantes. Nuestros pensamientos están con los que directamente están siendo afectados por estos eventos. 

Para mas información, favor ver a continuación:

Consulte los Lineamientos de Riesgo de Actividad del Aire Libre en (ROAR) en Tiempo Real de RAAN


On March 20, 2018, the Stockton Police Department and Stockton Unified School District Police Department received reports of an anonymous threat that was posted on social media. The threat was to commit a shooting at Weston Ranch High School on Friday, March 23rd. Officers from both Departments worked jointly to investigate the threat.

On March 21, 2018, a second threat was posted to social media. Detectives & Officers worked diligently on both threats and subsequently identified one 14-year-old Weston Ranch High School student who made the first threat. Detectives then identified a 15-year-old former Weston Ranch High School student and a 14-year-old One Ambition Manteca student who made the second threat.

All three juvenile suspects were arrested at their homes tonight and subsequently booked at the San Joaquin County Juvenile Justice Center. No weapons were located at the suspects' homes.

“Weston Ranch High School and Manteca Unified School District will seek immediate expulsion for those attending our schools. We want to thank Stockton Police Department and Stockton Unified School District Police Department for their immediate response and continued support during this difficult time. The safety of our students and staff is our number one priority, and we will continue to be vigilant."

3-22-2018 at 5:18 pm: Joint Release from MUSD and MPD

In response to a growing community concern for school safety both the Manteca Unified School District and the Manteca Police Department are working together to ensure the safety of staff and students within the District. We have noticed a social media post indicating unverified verbal rumors which threaten our schools. Currently, District administration working directly with Manteca Police Department have not located a source to deem the threats viable. As a precaution, Manteca Police Department and District administration will have an increased presence at MHS, SHS, and EUHS campuses. We understand there is a heightened concern for safety of students and staff; we encourage you to stay vigilant and continue to report any suspicious activity to your local police or school administration.

3-22-2018 at 2:20 pm: Social Media Threat Update

In our ongoing effort to support students and staff, we want to update you regarding the threatening social media post shared on Tuesday, March 20, 2018 for Weston Ranch High School indicating a shooting on Friday, March 23, 2018.

The District will have an increased administrative and staff presence on site tomorrow. Law enforcement will continue to have an increased presence on our campus.

We understand this is a difficult time and there is a heightened concern for the safety of students and staff. We want to assure you; our staff has reviewed the school safety plan and is prepared to follow appropriate protocols. We will continue to reach out as information becomes available to inform our community.

3-21-2018 at 2:30 pm: Threat Investigation Update

The District takes threats to our schools very seriously. Weston Ranch High School administration will impose the strongest penalty within our jurisdiction on the perpetrator including removal and seeking expulsion if the individual is identified as a student. We will press criminal charges against any individual who makes threats against our schools. The District has sent additional staff on site to support the safety of our students. Law enforcement has an increased presence on our campus as they conduct the on-going investigation. We are fully supporting Stockton Unified Police Department and Stockton Police Department as we run parallel investigations.

3-20-2018 at 8:50 pm: Threat against Weston Ranch High School

This is Principal Baird of Weston Ranch High School, as safety is our number one priority we wanted to alert you of a report of a threat made on social media. The threat stated a school shooting on Friday at Weston Ranch High School. We immediately contacted law enforcement and are working in cooperation as they investigate the credibility of this threat.

We will be working with law enforcement to ensure our campus is safe and secure. Recent events at schools in other states have heightened everyone’s concern for the safety of students. I want to assure you that we take any type of threat seriously and have the full cooperation of the police department. That policy will not change.

Thank you for your support and we ask for you to continue to stay vigilant in helping to protect our students and staff. We will update as we receive further information from law enforcement.



Tonight, the Stockton Police Department became aware of a threatening message which was spreading on social media about a school threat at Weston Ranch High School. This message was posted by an anonymous person and indicated there was going to be a shooting at the school this Friday, March 23rd. 

We are currently working with the Stockton Unified School District Police to determine this threat’s credibility or lack thereof. As part of this investigation, we will be communicating with Weston Ranch High School and the Manteca Unified School District. Out of an abundance of caution, we plan on having an increased presence around Weston Ranch High School. 

The Stockton Police Department will continue to work closely with our schools to ensure the safety of our students and school staff.  

We do encourage people who have information regarding school threats to call the Stockton Police Department at (209) 937-8377 or Crime Stoppers at (209) 946-0600. Callers can remain anonymous.  

People may also text information from their cell phones to ‘Crimes’ (274637) and type the keyword TIPSPD and then their tip or logon to the Stockton Police Department’s Facebook page and click ‘Submit A Tip’. Tipsters may also send tips on the Stockton PD Mobile Phone App. Tipsters can remain anonymous.

If you have any information that may lead to an arrest, call Crime Stoppers at (209) 946-0600. Crime Stoppers pays cash rewards up to $10,000.00.

2-22-2018: False Hoax Sierra High School

Good morning Sierra students, parents and staff. As you are aware, our first priority is for the safety and well-being of our students, their families and our staff. Sierra HS administration received information from the Manteca Police Department about a post that circulated on social media and in Northern California news media outlets early this morning. MPD determined the post was a hoax and not credible. Parents, please take this opportunity to discuss with your students the importance of reporting information to administration and following proper procedures whenever there is a perceived danger. We will continue working with the Manteca Police Department and Manteca Unified to ensure student safety for our school.

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