Every primary head who responded to an Oxford Mail poll believes school league tables are unfair and nearly half might take part in action to disrupt them.

The county's 11-year-olds sat their Key Stage Two SATs (standard assessment tests) last week, but if some heads have their way, this will be the last cohort to be ranked through "public humiliation".

Out of 14 Oxford heads who responded to the Mail survey, all thought league tables were unfair and six said they would consider taking some form of action to oppose them.

Earlier this month, the National Association of Head Teachers (NAHT) voted unanimously to oppose the publication of primary league tables, and its general secretary, Mick Brookes, suggested that parents back the campaign by keeping their children at home on test days.

But Joe Johnson, head of Sandhills Primary School in Oxford, wants heads to disrupt Oxfordshire's results rather than the actual tests by withholding a percentage of their grades.

He said: "We all want to know how kids are getting on and it's absolutely right that we should be accountable, but using league tables to compare one school with another is wrong.

"Enough's enough in terms of the public humiliation of schools and teachers who are working their socks off.

"We've got fixated with measuring but we're measuring the wrong things.

"Does a tree grow bigger if you measure it every day?

"Why are we paying these people to crunch away at numbers? Give them all the sack and put the money into front-line services."

Mr Johnson said schools which were forced by the local authority to take challenging pupils "transferred" from another school, were also unfairly penalised in the leagues.

Oxfordshire's Association of Teachers and Lecturers spokesman, Bob Martyn, said: "I don't think anyone likes league tables and we would support action to oppose them.

"We don't like the idea of the results being published in this way because of the difficulties it causes for schools in deprived areas."

Clive Hallett, Oxfordshire's NAHT spokesman and a retired primary head, agreed league tables should be abandoned, but was against heads disrupting the tests.

He said: "If we want to get rid of league tables, we've got to play it straight."

Michael Waine, Oxfordshire County Council's cabinet member for schools improvement and a also retired head, said that the raw test results should be published but that schools should be ranked according to their value added performance.

He said: "Parents and the community do have the right to see how schools are performing and the test results are an important part of the whole picture about how schools are impacting on their children's future."

In response to the Oxford Mail's findings, a spokesman for the Government's Department for Education and Skills (DfES) warned that Key Stage tests were a "non-negotiable part of school reform".