Just say no to junk data: Assessment at Michaela

I was reading @hfletcherwood‘s blogpost describing his dream assessment system:

1) Abolish whole-school data reporting on anything less than an annual basis.

Whether from teachers to school leaders, from school to parent, you name it, get rid of it.  It is only on an annual basis that we can conduct assessments thorough enough to provide valid inferences about students’ overall understanding of a subject, and where we can pursue reliably through moderation.  (If you doubt the former point, ask language teachers trying to mark assessments of speaking, reading, writing and listening on a termly basis).  Valid and reliable data would provide excellent justification for significant interventions for students.  This is necessary to create the time to pursue point 2 properly:

Just say no to junk data: Assessment at Michaela.