The Discovery New School in Crawley is to close.
Lord Nash, the Parliamentary Under Secretary of State for Schools, has written a letter to the school to say he is "not satisfied that the action the Academy Trust proposes to take is sufficient in all the circumstances."
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A further 85 buses are expected to arrive on Tuesday and Wednesday, with officials saying the entire operation will last at least a week.
The government will make an announcement about whether Heathrow or Gatwick should be awarded a new runway at 12.30pm today.
Tuesday morning's weather for the west of the region