In recent years, most U.S. states have revised policy by providing schools at least some flexibility to move away from the Carnegie unit system, with its focus on credits and "seat time," toward competency-based policies that link student advancement to mastery of content. Yet, there is little systematically collected information about…

Extensive research has been conducted on the relationships of Chinese-character recognition to reading development; strategic competence to reading comprehension; and home linguistic exposure to heritage language acquisition. However, studies of these relationships have been marked by widely divergent theoretical underpinnings, and their results…