[8] The school is a member of the Arizona Interscholastic Association's 5A San Tan Athletics Conference and competes in Division I and II sports.

[7] Gilbert High School is said to offer "over 220 courses in 14 departments"[10] including: Accelerated Learning, Advanced Placement and Honors Curriculum, Comprehensive Core Curriculum, School-to-Work, Community College Dual Credit Courses, ELL, On-Site Special Education, and Vocational Career /Technological Education Programs.

[8] In the fiscal year 2019, the Arizona Department of Education published an annual achievement profile for Gilbert High School resulting in a grade of "B" based on an A through F scale.

[12] Scores were based on "year to year student academic growth, proficiency on English language arts, math and science, the proficiency and academic growth of English language learners, indicators that an elementary student is ready for success in high school and that high school students are ready to succeed in a career or higher education and high school graduation rates".

[14] In 2019, the boys Basketball Varsity team won the 2018–19 5A State of Arizona Championship at Desert Financial Arena.

During the 2018 season, both guard and drumline made it to finals for the western regional competition in California and placed 1st in the state of Arizona at WGAZ championships.

[18] Gilbert High School Air Force Junior ROTC AZ-941 placed first in the JROTC Desert Classic Drill Competition State Championship in 2019.

[7] Student Navey Baker was featured in the October 4, 2013, episode of NPR show This American Life for her role as the Gilbert High Tiger mascot.