Welcome to Tres Rios Elementary School

Welcome to Tres Rios Elementary School, home of the Pumas! We are a K- 8 school in the Littleton Elementary School District #65. Located in Tolleson, Arizona, approximately 18 miles west of downtown Phoenix, we enjoy a friendly, family-oriented, small town atmosphere.

At Tres Rios we believe in the development of learning communities, and that every child can and will learn if provided an appropriate environment. We are committed to providing the tools to help our students be healthy, successful, lifelong learners. We offer a variety of programs to meet the needs and interests of our students, including an athletic program, special education, a band program and gifted program, as well as state-of-the-art technology.

We recognize the value and importance of parent/guardian participation in a child’s education and welcome your involvement. We have provided several ways to help you stay connected, including a Facebook page, Twitter, and this website. We thank you for your interest in our school and for supporting your child(ren), as we work together to educate and prepare our most precious assets, our children, to take on the world!

Thank you now enrolling calendar

A Message from our Principal

Tres Rios Families,

The school year is off to a great start. Our 3rd-6th grade classrooms are in full swing with the 1:1 laptop initiative. Our National Junior Honor Society has begun a campus wide recycling project. The first few weeks of school, we spend some time assessing your student in math and English/language arts. Your student may have come home talking about DIBELS or 6 Minute Solutions. These are programs that we use to measure reading fluency; we administer these assessments three times a year.

Thank you to all families that are using parent pick-up. We have worked out the kinks, and we are moving much quicker. Please be sure to stay in your car, and we will take care of loading your students when they reach the first three cars. Also, if you park and walk, please be sure to use the crosswalk. We want all of our Pumas to be safe. Por favor consulte nuestra carta en Español.

Until Next Time,

Karen Grose

Mrs. Karen Grose
Principal and Treasure Hunter
Tres Rios Elementary School


Quick Links
What's New
Safety Communication Letter

Littleton Elementary School District takes the safety of our students very seriously. Read more >>>


 
Important Information for Parents and Community Members

The safety and security of our students is our highest priority in the Littleton Elementary School District. Please read this letter regarding incidents reported on August 10 to the Avondale Police Department.


 
Educational Classes for Parents

Do you want to strengthen the bond with your children and learn more effective parenting skills? Do you want to increase the level of communication within your family? Then join Strengthening Families!

  Read more >>>


 
Safety Tip - Stay Hydrated!

Staying hydrated is a must! When the weather heats up it is more important than ever to stay hydrated. Read more >>>


 
Make Your Day

No one has the right to interfere with the learning or safety of others, and do what is expected and do it the best that you can. Read more >>>


 
Bully Prevention Monthly Tip

Student safety is a top priority at Tres Rios Elementary School. We participate in a bully prevention program with a monthly message and lesson. Read more >>>


 
Art Education Page

We have a new district Art Education page. We will be adding new things to the page in the coming weeks, so visit often.

Check out our new Art Education page here! Read more >>>


 
Tax Credit Gifts and Donations

Our students depend on the generosity of our community to fund many of our extracurricular programs. We hope you will consider making a tax credit donation. You can read all about it on our District site. We all win!


 
Let's Get Connected

Got Facebook? Do youTweet? Always be in the know with the latest information on Tres Rios! Read more >>>


 
Safety Communication Letter

Littleton Elementary School District takes the safety of our students very seriously. Read more >>>


 
Important Information for Parents and Community Members

The safety and security of our students is our highest priority in the Littleton Elementary School District. Please read this letter regarding incidents reported on August 10 to the Avondale Police Department.


 
Educational Classes for Parents

Do you want to strengthen the bond with your children and learn more effective parenting skills? Do you want to increase the level of communication within your family? Then join Strengthening Families!

  Read more >>>


 
Safety Tip - Stay Hydrated!

Staying hydrated is a must! When the weather heats up it is more important than ever to stay hydrated. Read more >>>


 
Make Your Day

No one has the right to interfere with the learning or safety of others, and do what is expected and do it the best that you can. Read more >>>


 
Bully Prevention Monthly Tip

Student safety is a top priority at Tres Rios Elementary School. We participate in a bully prevention program with a monthly message and lesson. Read more >>>


 
Art Education Page

We have a new district Art Education page. We will be adding new things to the page in the coming weeks, so visit often.

Check out our new Art Education page here! Read more >>>


 
Tax Credit Gifts and Donations

Our students depend on the generosity of our community to fund many of our extracurricular programs. We hope you will consider making a tax credit donation. You can read all about it on our District site. We all win!


 
Let's Get Connected

Got Facebook? Do youTweet? Always be in the know with the latest information on Tres Rios! Read more >>>


 
Safety Communication Letter

Littleton Elementary School District takes the safety of our students very seriously. Read more >>>


 
Important Information for Parents and Community Members

The safety and security of our students is our highest priority in the Littleton Elementary School District. Please read this letter regarding incidents reported on August 10 to the Avondale Police Department.


 
Educational Classes for Parents

Do you want to strengthen the bond with your children and learn more effective parenting skills? Do you want to increase the level of communication within your family? Then join Strengthening Families!

  Read more >>>


 
Safety Tip - Stay Hydrated!

Staying hydrated is a must! When the weather heats up it is more important than ever to stay hydrated. Read more >>>


 
Make Your Day

No one has the right to interfere with the learning or safety of others, and do what is expected and do it the best that you can. Read more >>>


 
Bully Prevention Monthly Tip

Student safety is a top priority at Tres Rios Elementary School. We participate in a bully prevention program with a monthly message and lesson. Read more >>>


 
Art Education Page

We have a new district Art Education page. We will be adding new things to the page in the coming weeks, so visit often.

Check out our new Art Education page here! Read more >>>


 
Tax Credit Gifts and Donations

Our students depend on the generosity of our community to fund many of our extracurricular programs. We hope you will consider making a tax credit donation. You can read all about it on our District site. We all win!


 
Let's Get Connected

Got Facebook? Do youTweet? Always be in the know with the latest information on Tres Rios! Read more >>>


 
Safety Communication Letter

Littleton Elementary School District takes the safety of our students very seriously. Read more >>>


 
Important Information for Parents and Community Members

The safety and security of our students is our highest priority in the Littleton Elementary School District. Please read this letter regarding incidents reported on August 10 to the Avondale Police Department.


 
Educational Classes for Parents

Do you want to strengthen the bond with your children and learn more effective parenting skills? Do you want to increase the level of communication within your family? Then join Strengthening Families!

  Read more >>>


 
Safety Tip - Stay Hydrated!

Staying hydrated is a must! When the weather heats up it is more important than ever to stay hydrated. Read more >>>


 
Make Your Day

No one has the right to interfere with the learning or safety of others, and do what is expected and do it the best that you can. Read more >>>


 
Bully Prevention Monthly Tip

Student safety is a top priority at Tres Rios Elementary School. We participate in a bully prevention program with a monthly message and lesson. Read more >>>


 
Art Education Page

We have a new district Art Education page. We will be adding new things to the page in the coming weeks, so visit often.

Check out our new Art Education page here! Read more >>>


 
Tax Credit Gifts and Donations

Our students depend on the generosity of our community to fund many of our extracurricular programs. We hope you will consider making a tax credit donation. You can read all about it on our District site. We all win!


 
Let's Get Connected

Got Facebook? Do youTweet? Always be in the know with the latest information on Tres Rios! Read more >>>


 
Safety Communication Letter

Littleton Elementary School District takes the safety of our students very seriously. Read more >>>


 
Important Information for Parents and Community Members

The safety and security of our students is our highest priority in the Littleton Elementary School District. Please read this letter regarding incidents reported on August 10 to the Avondale Police Department.


 
Educational Classes for Parents

Do you want to strengthen the bond with your children and learn more effective parenting skills? Do you want to increase the level of communication within your family? Then join Strengthening Families!

  Read more >>>


 
Safety Tip - Stay Hydrated!

Staying hydrated is a must! When the weather heats up it is more important than ever to stay hydrated. Read more >>>


 
Make Your Day

No one has the right to interfere with the learning or safety of others, and do what is expected and do it the best that you can. Read more >>>


 
Bully Prevention Monthly Tip

Student safety is a top priority at Tres Rios Elementary School. We participate in a bully prevention program with a monthly message and lesson. Read more >>>


 
Art Education Page

We have a new district Art Education page. We will be adding new things to the page in the coming weeks, so visit often.

Check out our new Art Education page here! Read more >>>


 
Tax Credit Gifts and Donations

Our students depend on the generosity of our community to fund many of our extracurricular programs. We hope you will consider making a tax credit donation. You can read all about it on our District site. We all win!


 
Let's Get Connected

Got Facebook? Do youTweet? Always be in the know with the latest information on Tres Rios! Read more >>>


 
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