Departmental heads in the sand: Why your department is performing worse than you think

How’s your driving? Below average, pretty normal, or better than most? Research suggests that the majority of our readers have just answered ‘better than most’. They are surely wrong. Only half of drivers can be better than the median. The other half are, by definition, below it. This is an example of what psychologists call [...]

By | July 30th, 2015|School accountability, Teacher careers|

Significance tests for school performance indicators: Why they’re OK really (but we should probably call them something else)

From time to time the use of significance tests for school performance indicators in RAISEonline is called into question. If school cohorts are not independent, random samples then surely we should not be using significance tests that assume independent, random samples right? Well, yes and no. If we want to make causal statements (i.e. that [...]

By | July 20th, 2015|School accountability|