Randomization and Study Conditions. Minimum likelihood allocation will be used to randomize participants, with stratification on race (Caucasian vs. Other), given the disproportionately high rates of prescription opioid misuse among Caucasian youth. Youth in the control group will be informed that they will be prompted when the next online survey is available to complete. Participants assigned to the web-based intervention will immediately (post-group assignment) be asked to start completing modules. Youth will be encouraged to complete 1-2 modules per login, 2x/week (about 30 mins. minimum per login). The core module content for the web-based intervention is as follows: What are Prescription Opioids? Misconception that Prescription Opioids are Safe and Non-addictive, Misconception that Using Prescription Opioids Without a Prescription is Not Illegal, Risks of Prescription Opioid Misuse, Non-medication Alternatives for Pain Management, Refusing Offers to Misuse Prescription Opioids, Refusing Requests From Others for a Prescription Opioid Prescribed to You, How to Know if You or Someone You Know May be Addicted.