In 2024, the majority of middle and high school students perceive themselves to be in good or excellent health (down 4 points and 6 points, respectively, from 2022) and view their current lives positively (down 2 points and 5 points, respectively, from 2022).; 70% of middle school students and 63% of high school students report a good level of mental well-being (up 11 points and 12 points, respectively, compared to 2022).; 15% of middle school students and nearly 20% of high school students report feeling lonely (down 6 points and 7 points, respectively, compared to 2022).; 45% of middle school students (in grades 6, 7, and 8) report psychological complaints (a decrease of 4 percentage points compared to 2022). Nervousness is the most frequently reported complaint (32%), followed by irritability (29%) and feelings of depression (21%).; 19% of high school students are at high risk for depression (+3.5 points compared to 2022).; 20% of high school students report having had suicidal thoughts in the past 12 months (-4 points compared to 2022), 15% report having attempted suicide at some point in their lives (+2 percentage points compared to 2022), and approximately 3% report an attempt that resulted in hospitalization.; Students’ mental health and well-being deteriorate during middle school and do not improve in high school.; Overall, girls have poorer mental health and lower levels of well-being than boys.; Between 2022 and 2024, students’ mental health shows mixed trends. After a marked decline in all indicators between 2018 and 2022, some show improvement, while others continue their downward trend.