bulldog Athletics

Greetings from Bulldog Nation, and welcome to the Sierra Linda Athletics page!

My name is Jim Kramer, the athletics director here at Sierra Linda High School, home of the Bulldogs! At Sierra Linda High School, we recognize the significance of athletics and club participation to the overall school high school experience and the positive impact it has on post-secondary success. These are formative years and go by quickly, so we want your child(ren) to get involved! Participating in athletics and other extracurricular activities allows students to develop confidence and gain skills and lifelong healthy habits.

For additional information on athletics activities, contact the athletics office at (623) 474.7720.

Here at Sierra Linda, we encourage all students to get involved in athletics and clubs and always welcome parent/guardian involvement in supporting their child and all of our student athletes. 

Go, Bulldogs!

Attention current and future athletes!

  • Parent(s)/guardian(s) must register you for your preferred sport online at RegisterMyAthlete.com.
  • The student athlete must register at AIA Academy and complete and pass the Barrow Brainbook course.
  • Transfer students must have their parents complete the AIA 520 Form and submit it to AIA online.
  • Physicals must be current and up to date using the form on the register my athlete website.
    • Please note that the Athletics Department must clear all students prior to practice. The $50.00 athletics fee is due prior to the first day of practice for all sports. If you need assistance in paying the athletics fee, you can make an appointment with the athletics director by calling Mr. Kramer at (623) 474.7720.
    • All sport schedules can be found AZPREPS365 website.


James Kramer
Athletics Director
Sierra Linda Bulldogs


We strictly prohibit students, athletics teams, and student organizations of Sierra Linda High School and the Tolleson Union High School District from engaging in any type of hazing activity. Hazing is “any action or activity taken, or situation intentionally created, whether on or off campus, to produce mental or physical discomfort, embarrassment, harassment, or ridicule.” Please take a moment to read our district’s policy on hazing.

Sports Teams

Fall Sports
Cross Country

Winter Sports

Spring Sports

We post updates as we receive them. Please call the athletics office (623) 474.7720 with any questions about schedule changes.

Discipline/Athletics Staff

Cherrie Aldama
Admin Assistant; Athletics
(623) 474.7720
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Jim Kramer
Assistant Principal; Athletics
(623) 474.7721
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Martina Lopez
Admin Assistant; Discipline
(623) 474.7730
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Evelyn Muniz
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Christina Valenzuela
Assistant Principal; Discipline
(623) 474.7731
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