 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".In 2020, the United States national nonprofit organization, GreatSchools, gives Gilbert High School a 5/10 (down from 7/10 in 2019) overall rating noting that students perform "average on state tests, have above average college readiness measures, and are making average year-over-year academic improvement.This school is said to have below average results in how well it’s serving disadvantaged and low income students.