There is a large increase in the number of students at school coping with anxiety, depression and self-harm, with some children facing these issues as young as 10 years old.
According to a report by Mission Australia and the Black Dog Institute, one in four teens meet the criteria for having a "probably serious mental illness".
This is a 20 per cent increase from five years ago, the ABC reports.
Among key issues are cyber bullying and stress, particularly in relation to exams.
If you or someone you know needs help, contact Lifeline on 13 11 14 or Kid's Helpline on 1800 55 1800.