“…A well-established and robust international evidence base exists (and continues to grow; e.g Melhuish et al, 2008;Bonci et al, 2011;Romeo et al, 2018) that attests to the long-term and sizable positive impacts of the HLE upon educational trajectories, educational equity, and long-term developmental outcomes (e.g. Jeynes, 2005;Son and Morrison, 2010;Sammons et al, 2015b;Shuey and Kankaras, 2018).…”