Willowbrook draws its students from Villa Park, Oakbrook Terrace, and portions of Elmhurst, Oak Brook and Lombard.

[10] In 1961, a bust of what was alleged to be Thomas Jefferson but has since been determined to be German Composer, Franz Joseph Hayden was added to the southeast wall of the school's music wing.

After completion of "Building the Future" in the Fall of 2010, dedication ceremonies were held at Willowbrook and Addison Trail on October 17, 2010.

[5] In June 2009, Newsweek, using the Challenge Index, ranked Willowbrook #1464 on their annual list of top American high schools.

The school sponsors interscholastic athletic teams for young men and women in: basketball, cross country, golf, gymnastics, soccer, swimming and diving, tennis, track & field, and volleyball.

[13] The following teams have finished in the top four of their respective IHSA sponsored state tournaments or meets:[14] Theatre at Willowbrook High School is one of the largest student organizations at the school, with over 200 students involved across three yearly productions, performing in the historic Doris E. White Auditorium.

[16] Since entering the Illinois High School Association Drama & Group Interpretation competition in 2014, the Willowbrook High School Theatre contest play has received the following accolades: The Willowbrook High School music department hosts several levels of auditioned curricular ensembles: three choral ensembles, three concert bands, and two string orchestras; as well as an extracurricular show choir, dubbed "Center Stage", rock band, marching band, and two levels of auditioned jazz ensembles.

[18] In recent years, the team has earned a plethora of individual awards as well as the following group titles: The Rock is a tradition in Willowbrook High School.