ISBN-13: 9781138042551 / Angielski / Miękka / 2018 / 350 str.
ISBN-13: 9781138042551 / Angielski / Miękka / 2018 / 350 str.
Originally published in 1974. This final volume in the trilogy is concerned primarily with comparing the academic progress made by pupils of near-equal ability in the two types of school.