<span style="font-size: 10.0pt; line-height: 106%; font-family: ";Times New Roman";,serif; mso-fareast-font-family: Calibri; mso-ansi-language: EN-GB; mso-fareast-language: AR-SA; mso-bidi-language: AR-SA;" lang="EN-GB">This paper investigates the issue of plagiarism in the context of High School. It aims at uncovering what students may or may not be aware of in relation to the issue. Participants answered a questionnaire with general open questions (e.g. What is plagiarism?; Have you ever plagiarized?) and a simple test, in which they were required to identify which of the contents offered were plagiarized. The application of the questionnaire with open questions and a test helped identifying characteristics of their perceptions of plagiarism. Results show that students see plagiarism as a copy, especially of written content. However, they did not seem to be aware of other types of plagiarism (e.g. oral plagiarism; self-plagiarism). Data also showed that students are most of the time warned by teachers and it is not clear for them if the institution where they study has guidelines or a document regulating plagiarized assignments.</span>