This study investigates Filipino students' reasoning competency levels in evaluating the credibility of digital media content and whether significant statistical differences exist in their competency by education status, sex, age group, Internet use, or geographical location. Four hundred twenty-four students representing the senior high school, undergraduate, and postgraduate levels responded to four modified versions of the Stanford History Education Group's civic online reasoning tasks. The study found that most students have 'beginning' competency levels in author-checking, fact-checking, and bias-checking but 'emerging' competency levels for image-checking. Younger students and those who spend more hours online have higher mean competency levels for verifying the authenticity of a social media page. Postgraduate students fared better in distinguishing facts from opinions in arguments, while students residing in the Masbate province consistently registered lower mean scores for author- and fact-checking. This study indicates the need to strengthen Filipino students' information/media literacy across educational levels.