More needs to be done to attract an ethnically diverse range of teachers, Wales' education minister has said.
Wales is the first UK nation to make the history of Britain's colonial past mandatory in school lessons.
Now new anti-racism training for teachers is being rolled out across the country to support this.
The granddaughter of Wales' first black headteacher said she hopes it will boost the "incredibly low" number of black people entering the profession.
Education Minister, Jeremy Miles said: "I don't think anybody would believe enough has been done up to this point".
"I absolutely accept the challenge that there is much more to do, we have a very clear plan for doing that, that is underway," he said. "Unfortunately it will take some time to do that."