%0 Generic %A Hodgen, J %A Foster, C %A Coe, R %A Brown, M %A Higgins, S %A Küchemann, D %C London, UK %D 2020 %F discovery:10099162 %I UCL Institute of Education %T Low attainment in mathematics: An investigation focusing on Year 9 students in England. Technical Report %U https://discovery.ucl.ac.uk/id/eprint/10099162/