Research shows inspections work

28th August 1998 at 01:00
THE assertions by Professor Carol FitzGibbon about the Office for Standards in Education inspection methodology (TES, August 14) are blind to the fact that it works. This, at least, is the view of the 10-1 majority of schools which agree that inspection judgments are fair and accurate. We know because, since April 1996, we have asked them all.

Instructions on sampling are clearly set out in our inspection guidance. In primary schools, for example, observations must cover the subjects and areas of learning of the curriculum, all year groups and all teachers. Inspectors must spend at least 60 per cent of their time in school gathering first-hand evidence of teaching and learning.

Judgments about lessons are almost always based on at least 30 minutes of observation. Those on the quality of teaching across all schools rest normally on samples ranging from 50 to 200 lessons.

Our study of inspectors' judgments was guided by researchers at the University of London Institute of Education and Dutch statisticians, subject to peer review, and published in a respected international journal. It found that there was exact agreement between pairs of inspectors in about two-thirds of lessons, and close - that is, acceptable - agreement (to within one grade on a seven-point scale) in one third. They were less reliable in only 3 per cent of lessons. We have begun a programme of further training designed to improve reliability still further.

As for value-added measures, all that were available to a few schools in 1983 were related to sixth-form subject performance. There are at present no reliable and comprehensive value-added measures through the key stages of the national curriculum, and researchers disagree about the validity of different approaches.

Other systems have their limitations as well as their uses. As useful and acceptable indicators become available, the inspection procedures incorporate them. Our PICSI (Pre-Inspection Context and School Indicator) reports are an example of this.

OFSTED has published, since 1994, a series of validated studies of inspection. So have other researchers, but Professor FitzGibbon is not thought to among them.

Peter Matthews

Office for Standards in Education

Head of Inspection Quality, Monitoring Development

London WC2

Subscribe to get access to the content on this page.

If you are already a Tes/ Tes Scotland subscriber please log in with your username or email address to get full access to our back issues, CPD library and membership plus page.

Not a subscriber? Find out more about our subscription offers.
Subscribe now
Existing subscriber?
Enter subscription number


The guide by your side – ensuring you are always up to date with the latest in education.

Get Tes magazine online and delivered to your door. Stay up to date with the latest research, teacher innovation and insight, plus classroom tips and techniques with a Tes magazine subscription.
With a Tes magazine subscription you get exclusive access to our CPD library. Including our New Teachers’ special for NQTS, Ed Tech, How to Get a Job, Trip Planner, Ed Biz Special and all Tes back issues.

Subscribe now