Manitoba teenagers fare poorly compared to their Canadian peers in an international ranking of student achievement.

The Programme for International Student Assessment compares science, math and reading skills of 15-year-olds in nearly 80 countries.

The study finds Manitoba students were last in math and science when compared with all the other Canadian provinces and second to last in reading.

Those results are worse than in the last assessment in 2015 when Manitoba ranked second to last in science and was below the national average in both reading and math.