Aboriginal, and particularly First Nations, children are much more likely than non-aboriginal children to be from low-income homes. Poverty has a powerful impact on a child's readiness to start school and ability to stick with it. It is closely associated with poor housing, frequent moves and hopping from school to school. Also, many struggling families are led by single parents with little education. A Manitoba Centre for Health Policy study, published in 2004, found that in Winnipeg's low-income neighbourhoods, children fell behind as early as Grade 3. Studies across Canada indicate high-school dropout rates among aboriginal people range as high as 50 per cent compared to the 80 per cent graduation rate of non-aboriginals. The allure of tax breaks for a student who feels he failed at school is very limited; more likely, school is another problem in a complicated life.