Manitoba's auditor general says despite government efforts, the graduation gap between indigenous and non-aboriginal students is worsening.

The report from Norm Ricard says only 55 per cent of aboriginal students are graduating from high school, compared to 96 per cent of non-aboriginal students.

It says the gap has grown since 2010, when the government started measuring the results of its efforts to help aboriginal students complete high school.

The report says the government has not given school divisions and other partners directions on how to improve the graduation rate for aboriginal students.

It also says the department hasn't set hard targets for what the graduation rate should be.

The government says it accepts the report's findings and is working on improvements such as a greater focus on literacy skills earlier in student lives.