A secondary school named in a sex scandal has been heavily criticised by Ofsted.

Government inspectors have judged Batley Business and Enterprise College to be inadequate.

They said that the boys-only college had declined over the past two years and that teaching and pupils’ achievement was not good enough.

Two weeks ago one of the school’s maths teachers, Jonathan Craven, was given a 12-month prison sentence suspended for two years at Leeds Crown Court and placed on the Sex Offenders Register.

He was found to have 14,000 indecent images and movies of children on his computer. He had an attraction for teenage boys in football kit and had a stash of indecent material which he made available to others from June 2013.

Maths was one of the subjects which came in for criticism in the Ofsted report, which made hard reading for the school leaders.

It said: “The college’s overall effectiveness has declined since the last inspection (in November 2012).

“High turnover of staff, including at leadership level, although dealt with effectively by the headteacher, has hampered the college’s ability to bring about improvements.

“Over time, teaching and its impact on students’ achievement are inadequate. In the 2014 GCSE examinations, lower- and middle-ability students especially made inadequate progress in mathematics, the humanities subjects and French.

“The quality of teaching across the college, although improving in recent months, is too inconsistent.”

Despite such a damning report, Ofsted acknowledged that new headteacher Samantha Vickers and her leadership team had the vision and determination to improve the 519-pupil school.

The new governing body is now in place at BBEC, which is on the site of the former Batley High School for Boys, and is monitoring things more closely.

Ofsted said that promotion of students’ spiritual and cultural values is a strength of the college, where over 90% of the boys are from Indian or Pakistani heritage.

Ms Vickers took up the role as head teacher of Batley Business and Enterprise College in October 2014, just before the inspection took place.

She said: “The report is disappointing, but it’s very important to stress that there is new leadership at the school which is already having a positive impact.

“Ofsted highlighted this by saying we have the capacity to improve, a determination to make the progress that is needed and a clear vision for taking the school forward.

“We can reassure everyone that strong action was already being taken before Ofsted’s visit and, as a result, we are seeing more examples of good and outstanding practice.

“We also have several new members of staff, which is helping us to increase the pace of change and ensure standards rise quickly across the school.

“The new leadership at senior and middle leader level, along with all staff and governors, are committed to making further improvements. We expect that our next inspection will reflect the benefits of this highly focused work.

“We achieved our best ever GCSE results in 2013 and we are confident that the coming year will be another one of high achievement.”