Max points: 5.0 what negative experiences in each of the sub-periods of early adolescence, middle adolescence, and emerging adulthood could severely affect the learning development in secondary education?

I think it would be bullying. In my opinion, bullied children or bullied teens are more prone to depression, which later affects their secondary and tertiary education. When they are bullied, because of their appearance or their sexuality, they tend to create a wall between them and others. This wall will then isolate them from other people. They tend to feel bad about themselves and fears other's judgment. They will not participate in classes or school activities. They would then feel that they are useless, which then lead to suicide.