According to The Economist, June 2106, 40% of teachers in the OECD have never observed another teacher or given feedback. A new survey conducted by Novus in Sweden during the academic year 2016/2017 only 35 percent of Swedish teachers had someone else – a teacher colleague, a principal or a coach – visiting their classroom during the last two semesters. However, only 11 percent of the teachers indicated that they regularly received constructive feedback after or in connection with the visits. The core of systematic quality assurance – to improving teaching – is a major development area for schools in many countries.

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