Another secondary academy in Maidenhead has received a disappointing Ofsted report.
Inspectors have concluded Altwood CE School in Altwood Road 'requires improvement'.
The Advertiser revealed last week Cox Green School had also been criticised by the education watchdog. Both were recently listed as 'schools causing concern' by the Royal Borough.
Altwood's report said the behaviour and safety of pupils is good, as is leadership and management.
But the achievement of pupils and the quality of teaching should be better.
Marking was described as 'not always effective' and the teaching quality as 'too variable'.
The report pointed out the proportion of pupils getting five A*-C grades including English and maths declined over the last two years, with not enough progress made in English and science.
It also said teachers do not use all the available information about students' abilities to provide work to stretch every individual.
Elements of the school were praised by the inspectors, including the sixth form and the broad subject range offered.
In order to improve, the report said the school needs to better the quality of feedback students are given, increase the proportion of lessons judged to be good and outstanding, and increase students' progress rate in all subjects.
Headteacher Kathleen Higgins, who is leaving the school this year, said the highlighted areas have been included in a School Improvement Plan.
"GCSE results in 2012 dipped and this was disappointing. As previously shared, our students were significantly adversely affected by the English GCSE examination grading problems which received much national coverage," she said.
"We have also addressed inconsistent practice in terms of marking with the introduction of a new marking and assessment policy which will ensure that teaching and learning will continue to improve in all areas and that challenging targets will be set."
She added the school was pleased a number of strengths including the curriculum were noted.
The inspection took place on May 2-3.
Altwood was previously inspected by Ofsted in 2009 and deemed to be 'good'.
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