Answer distribution
Year 2018Year 2017Year 2016Year 2015Year 2014Year 2013Year 2012
170.572.300000
224.523.100000
31.81.800000
41.61.300000
50.90.900000

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)