School bosses said they are ‘determined to demonstrate improvements’ following an inspection.
Mount Carmel High School in Accrington was found to be ‘good’ in three keys areas including leadership, teaching quality and pupil personal development, behaviour and welfare.
However a lower rating in ‘outcomes for pupils’ meant that school was given an overall ‘requires improvement’ rating.
Headteacher Xavier Bowers said this was due to the school ‘not demonstrating enough convincing evidence that it is rapidly improving attainment and progress’.
He said Mount Carmel was the first secondary school in the Lancashire Education Authority to be inspected under a new ‘more rigorous and demanding framework’.
Mr Bowers said they were ‘disappointed’ with the result but stressed there were ‘many positive comments’ made.
He said: “This is mainly due to the legacy of examination results since our last inspection rather than the quality of teaching, learning, attainment and progress made by pupils currently in school.
“While we are disappointed with the overall Ofsted judgement we accept the decision and are determined to demonstrate the improvements that Ofsted have identified.
“We are extremely pleased and proud to maintain our good judgements for effectiveness of leadership and management, quality of teaching, learning and assessment and personal development, behaviour and welfare and we are determined to build on the success of the examination results of 2015 in 2016 to ensure a good judgement in the ‘outcomes for pupils’ criteria.
“We have made changes to the leadership and management team and have recently appointed senior and middle managers who are transforming the teaching and learning and building a strong foundation for improvement.”
Mr Bowers said as a result of the ‘very positive judgements’ they will now be only inspected in the next 12 to 24 months instead of every term.
Lead inspector Dawn Platt said in her report that there is a ‘successful drive’ to improving teaching quality and learning and that ‘robust plans’ have been put in place to accelerate progress.
She said student behaviour is ‘good and improving’ and their ‘spiritual, moral, social and cultural development is strong’.