THE share of Australians in their 20s who are not learning or earning has remained stubbornly high, failing to ease to pre-global financial crisis levels, a new report reveals.

But there are some positive signs among youth in their mid to late teens, with an increase in 15- to 19-year-olds involved in full-time education and training over the past three years.

Struggling to find their feet ... Australians aged between 20 to 24 years old are finding it hard to fully engage in education, training or work.

And participation rates among indigenous teenagers are rising at twice the rate of the rest of the population.

The results are outlined in the latest evaluation of the National Partnership on Youth Attainment and Transitions, a $706 million program aiming to ensure young people are learning or earning.