article_snippet: Automatic one-hour detentions were introduced for arriving late to a lesson or wearing uniform incorrectly.
article_snippet: Disruption in lessons led to a full day in an isolation room.
article_snippet: The approach led to ‘huge numbers’ in detention – more than 300 every day in the first week.
article_snippet: It wasn’t terrible in general, but some classes were just too hard to teach.
article_snippet: Some critics said it was ‘draconian’ for pupils to sit in silence for an hour.
highlights_snippet: 300 pupils-a-day were given detention in the first week for rule breaches .
  