"If you think you have no impact, stick with it because you do, and not just in the early years - at all stages of secondary school teachers and parents have a significant impact." He also cautioned that the flipside of the research is that academic motivation suffers when a child does not get on well with teachers or parents. "The study clearly points to the importance of positive connections and quality relationships with teachers and parents in adolescents' lives."

The study looked at 3,450 Australian high school students in Years 7 to 12. Quality teacher-student relationships had the most significant impact on students' academic outcomes, followed by parent-child relationships. Some of the key academic outcomes assessed were motivation, engagement, homework completion, enjoyment of school, attendance and educational aspirations. Interestingly, when the study looked at non-academic outcomes (for example physical self-concept, honesty, emotional stability) peers had a bigger influence than teachers and parents.

"An important aspect of the study was to uncover the different ways parents, teachers and peers influence different parts of adolescents' lives," said A/Professor Martin. "Our findings attest to the need for young people to have a range of positive interpersonal relationships in their academic, home/family, and social lives.

The study, titled Young People's Interpersonal Relationships and Academic and Non-academic Outcomes has just been published.