Typically, school administrators determine their school's security practices, but parental involvement may also play an important role in school security decisions. Data from the 2015-2016 School Survey on Crime and Safety (SSOCS 2016) was used to examine the relationship between parental involvement and the presence of physically invasive security practices in secondary schools. Invasive security was defined as the emplacement of metal detectors, contraband sweeps or drug sniffing canines. Analyses revealed that high levels of school-based parent engagement were associated with lower odds of employing invasive security measures in the school setting.