BINSTEAD Primary School has slipped from 'outstanding' to 'good' in its latest Ofsted.
The inspection earlier this month found small improvements were needed to bring the school back to the top standard.
Marking in mathematics, support for middle managers and communication with parents and carers were singled out for improvement by the education watchdog, which also noted results had slipped last year after being consistently above average.
However, the largely positive report said pupils made good progress overall and were making better progress this year than last.
Meanwhile, teaching was described as lively and engaging while students' good behaviour was also praised.
The report said: "Teachers and support staff help disabled pupils and those with special educational needs to make good progress because they know the pupils extremely well and are skilled at asking questions and explaining things clearly."
Headteacher Alison Mosedale, who took over last year, was said to have a clear vision for the school's future and, with senior staff and governors, had already made several important improvements to ensure all pupils made at least good progress.
"She has not shied away from changing things that were not working as well as they should have been," the report said.
Cllr Richard Priest, the IW Council's executive member for children’s services, said the Island should be very proud of the school.
"Ofsted’s inspection framework has become much tougher in recent years, so I am delighted that the school, the governors, pupils and parents have achieved this result," he said.