A Keighley secondary school whose overall effectiveness has been described as "inadequate" by Ofsted inspectors has been given a year to improve.

A notice-to-improve has been handed to Greenhead High School after it achieved the bottom grading in three categories and "satisfactory" in most others.

But Greenhead head teacher Trish McCarthy said she thought the report was unfair, and focused on a minority group of year 11 pupils which was not representative of the school.

She said: "I am very disappointed because I and the authority do not believe that the picture that the inspectors are painting is a picture of the real school."

News of the report came as stunned parents in Addingham have reacted with outrage at a decision to turn their children away from Ilkley Grammar and send them to Greenhead For the first time ever, youngsters from the village have been refused entry to Ilkley Grammar School because of huge numbers of Ilkley children seeking places. Ten Addingham children have instead been allocated places at Greenhead - an eight mile drive away from the village.

Addingham parent Martin Adams says he was unprepared for the decision. He now wants to know why a line has been effectively drawn across the community. Mr Adams, of Moor Lane said: "It's never happened before, it's been an absolute bombshell. It's always been given that children from Addingham go to Ilkley Grammar."

Another parent, who did not want to be named, said she would rather teach her child at home than accept the place at Greenhead. It is understood all of the ten families plan to appeal.

Ms McCarthy added: "The report is based on 30 students in year 11 who did not achieve the right number of GCSEs and now 29 of them are in training or work."

Mrs McCarthy explained that with the Contextual Value Added assessment, which measured the progress students made between Key Stage 3 and Key Stage 4, the Government was expecting each student to achieve a certain number of points from their GCSEs. She said: "Thirty students did not get the number of points they should have and it affects the whole school progress."

She went on to say that most of the students started school late in their career and came to Greenhead later, so their progress was measured on the last few months of education at Greenhead. "When you take those students out of the equation we have a CVA of 1,000, which is what we expected, but the inspectors wouldn't accept our explanation."

The inspectors said that children did not make as much progress as they should because teaching and learning was inadequate and teachers did not expect enough of their students. They also said that too much chattering went on to disrupt lessons and that teaching was not challenging enough.

But Ms McCarthy said she did not think the inspectors understood the complexity of her school in dealing with the pupils that they received.

She said: "We still have an issue with some of our children who go back to Pakistan to live, and we have the full range of pupils from EU countries and we have parents who ask to take their pupils away in term time because of the expense of going during holiday time."

By the time inspectors come again in the autumn term, Ms McCarthy is confident that the school will satisfy Ofsted demands to improve.

The school has also just won recognition for boosting the numbers of pupils who gain top GCSE grades from the Specialist School and Academies Trust.