Answer distribution
Year 2018Year 2017Year 2016Year 2015Year 2014Year 2013Year 2012
119.926.900000
239.142.000000
311.313.800000
415.69.600000
512.57.700000

Choices for answers

  1. Never (value when calculating levels: -2.0)
  2. In some lessons (value when calculating levels: -1.0)
  3. In about half of lessons (value when calculating levels: 0.0)
  4. In most of lessons (value when calculating levels: 1.0)
  5. In almost every lesson (value when calculating levels: 2.0)