<![CDATA[Adolescence is a critical period characterized by psychological, social, and academic changes that may affect mental well-being. This study examined changes in high school students’ knowledge of anxiety and overthinking following mental health psychoeducation incorporating the Even If and Butterfly Hug techniques. A quantitative one-group pretest-posttest design was used involving 91 students from SMA IT Al Fityan in Makassar. Knowledge was assessed using a 10-item instrument, with total scores ranging from 0 to 100. Data were analyzed using descriptive statistics, the Wilcoxon Signed-Rank Test, effect size, and normalized gain (N-Gain). The mean knowledge score increased from 80.22 (SD = 16.864) at pretest to 86.37 (SD = 16.297) at posttest, representing a mean increase of 6.15 points. Scores increased among 47 students, decreased among 14, and remained unchanged among 30. The difference between pretest and posttest scores was statistically significant (Z = −4.177, p < 0.001), with an effect size of r = 0.438 and a mean N-Gain of 42.58%. These findings indicate improved knowledge of anxiety and overthinking following the psychoeducation program. However, the absence of a control group and the use of a knowledge-based instrument limit causal interpretation and do not establish reductions in psychological symptoms. Further controlled studies using validated psychological measures are needed to evaluate the intervention’s potential effects on students’ mental health.]]>
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