The graph to the right is a typical ‘Chances graph’, in
this case for a student studying AS Biology.
Chances graphs are based on prior achievement, and
show the likelihood of a student achieving a certain
grade. In the graph on the right, the most likely
grade (and therefore the minimum target grade) for
the student, as denoted by the black bar, is a grade
C. However, 28% of students with the same level of
prior achievement can expect to get a grade B, and
23% can expect to achieve a grade A.
How can we ensure that the students in our care have the greatest opportunity of achieving these ‘above
The work of Hattie and Marzarno is clear- we can look at evidenced based strategies that enhance
achievement and ensure that they are applied in our classrooms.
Click the image to enlarge