O'Connor High School serves the entire town of Helotes along with parts of unincorporated Bexar County and the larger central city of San Antonio.

Metal roofs, limestone colored split face CMU, and steel siding were used to follow the German Hill Country vernacular style.

Despite the additions and the construction of Louis D. Brandeis High School, O’Connor has experienced overcrowding since its opening and has always had over 30 classes in portable buildings.

Previously, students residing in NISD, but not in the O'Connor Zone could apply to a very selective amount of spots for the Agriculture Endorsement.

The Northside Board unanimously voted to establish the Agriculture Science & Technology Academy at O'Connor HS.

O'Connor has the largest and most expansive Future Farmers of America complex in the Northside Independent School District.

After Dierolf's retirement, the school's newly built multipurpose facility, containing both a band hall and a dance studio, was named after him.

When Louis D. Brandeis High School opened in 2008, the band's numbers dropped to 230, but grew back to 380 members.

During the COVID-19 pandemic, the band's numbers slightly dropped to 250 due to some members leaving and the social distancing protocols that were in effect.

[8] The O'Connor theatre program was pioneered by the Drama Department director Deann Fleming's (whom has since retired) senior one-act project.

JROTC detachments are required to perform community service in addition to teaching an Air Force approved curriculum.

They instituted a training program for Kuentz Elementary School's Safety Patrol Squad that raises and lowers the flags every day.