“Perceived Fraudulence” (or “Impostor Syndrome”) is a potentially alarming psychological phenomenon for students. The purpose of the research team on the “Perceived Fraudulence” phenomenon in high school students in Da Nang City is to determine the prevalence of this phenomenon; its relationship with factors of learning environment, age, gender, and academic achievement; its structure, thereby, improving students’ awareness of this phenomenon; and to propose some educational measures to minimize the manifestation of this phenomenon in students.