Table of Contents “...Renshaw -- pt. 2 Cultural---historical plane -- 2.Framing achievement when learning is unified: The concept of unity in Vygotsky's theory and methodology / Jennifer A. Vadeboncoeur -- 3.Family capital, child's personal agency, and the academic achievement of Chinese migrant children / Qlaobing Wu -- 4.A psychometric view of sociocultural factors in test validity: The development of standardized test materials for Maori-medium schools in New Zealand/Aotearoa / John A. ...”