Who teaches science in Alagoas? A quantitative analysis of non-specialist teaching at primary and secondary schools in Brazil

While non-specialist teaching increasingly becomes an object of public interest, there is little data available on the actual educational background of teachers giving classes outside their specialisation. This work analyses the data collected by the Brazilian Ministry of Education from public and private schools in Alagoas (Brazil), with a special focus on science education at primary and secondary schools. We find that the phenomena of non-specialist teaching is highly subject specific. For instance, while both maths and biology are little affected, more than half of physics classes are given by teachers without an education in any natural science.