Curriculum expert Prof Andrew Pollard disagrees.

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Prof Stephen Heppell, an education expert determined to transform the curriculum, agrees.

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She questioned why it had taken so long to produce and asked why it did not reflect the findings of the expert panel for the national curriculum review which reported in December last year.

BBC: Leaked TES curriculum draft panned by experts

They are currently in production on a "Kind Kit" which will include a recorded version of their school assembly program, the film "Finding Kind, " and a yearlong curriculum they say is endorsed by self-esteem expert and author Jessica Weiner (who also appears in the documentary).

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For the past 25 years he served as Senior Research Scientist at ETR Associates in California, USA. Over his professional career, he published the most definitive systematic reviews on the effectiveness of sex, relationships and HIV education in schools and is widely recognised as the leading world expert on sex, relationships and HIV education curriculum standards.

UNESCO: EDUCATION

Prof Mary James, who was part of the government's expert panel, told the TES she was broadly supportive of the simpler curriculum but highlighted the fact that the sections on the overall aims for secondary education had simply been reproduced from primary programmes of study.

BBC: Leaked TES curriculum draft panned by experts