Schools in Wales are "ignoring or denying racism," according to a UK equality charity.
Race Equality First said there had been a steady rise in reported cases and schools "very rarely take action".
Rapper Duke Al said he faced a lot of "blind racism" at school and was often the subject of racial jokes.
The Welsh government said it was committed to building an anti-racist Wales by 2030, including an anti-racist education system.
Speaking to BBC Wales Duke Al said he had an "amazing" group of friends but as one of the few ethnic minority pupils, he remembers a lot of good-natured teasing.
