@misc {MATHEDUC.02352554,
    author       = {Ireson, Judith and Hallam, Susan and Hack, Sarah and Clark, Helen and Plewis, Ian},
    title        = {Ability Grouping in English Secondary School: Effects on Attainment in English, Mathematics, and Science.},
    howpublished = {Educ. Res. Eval. 8, No. 3, 299-318 (2002).},
    doi          = {10.1076/edre.8.3.299.3854},
    abstract     = {Studied the impact of ability grouping on attainment in a cohort of year-9 students in 45 mixed secondary schools in England representing a variety of grouping practices. In mathematics, students at higher levels by year 6 make more progress in sets, but those in lower levels make more progress in mixed ability classes. Discusses educational implications. (ERIC)},
    msc2010      = {D43xx},
    identifier   = {2003c.02188},
}