Importance: The number of urban migrants in China is 300 million and is increasing rapidly in response to government policies. Urban migrants have poor access to health care, but little is known about rates of correction of refractive error among migrant children. This is of particular significance in light of recent evidence demonstrating the educational impact of providing children with spectacles.

Objective: To measure prevalence of spectacle need and ownership among Chinese migrant children.

Design, Setting, and Participants: Population-based, cross-sectional study among children who failed vision testing (uncorrected visual acuity ≤6/12 in either eye) between September 15 and 30, 2013, at 94 randomly selected primary schools in predominantly migrant communities in Shanghai, Suzhou, and Wuxi, China.

Main Outcomes and Measures: Refractive error by cycloplegic refraction; spectacle ownership, defined as producing glasses at school, having been told to bring them; and needing glasses, defined as uncorrected visual acuity of 6/12 or less correctable to greater than 6/12 in either eye, with myopia of −0.5 diopters (D) or less, hyperopia of +2.0 D or greater, or astigmatism of 0.75 D or greater in both eyes.

Results: Among 4409 children, 4376 (99.3%) completed vision screening (mean [SD] age, 11.0 [0.81] years; 55.3% boys; 4225 [96.5%] migrant and 151 [3.5%] local). Among 1204 children failing vision testing (total, 27.5%; 1147 migrant children [27.1%] vs 57 local children [37.7%]; P = .003), 850 (70.6%) completed refraction. Spectacle ownership in migrant children needing glasses (147 of 640 children [23.0%]) was less than among local children (12 of 34 children [35.3%]) (odds ratio = 0.55; 95% CI, 0.32-0.95; P = .03). Having uncorrected visual acuity less than 6/18 in both eyes was associated positively with baseline spectacle ownership (odds ratio = 5.73; 95% CI, 3.81-8.62; P < .001), but parental education and family wealth were not.

Conclusions and Revelance: Among urban migrant children, there was a high prevalence of need for spectacles and a very low rate of spectacle ownership. Spectacle distribution programs are needed specifically targeting migrant children.

Abstract: Growing evidence suggests that teachers in developing countries often have weak or misaligned incentives for improving student outcomes. In response, policymakers and researchers have proposed performance pay as a way to improve student outcomes by tying concrete measures like achievement scores to teacher pay. While evidence from randomized experiments generally indicates that performance pay programs are effective at improving student achievement in developing countries, there has been considerable variation in how much these programs affect student achievement. The goals of this study are to: (1) examine the impacts of different teacher performance pay designs on student achievement, both for the average student and for students across the baseline achievement distribution; and (2) examine the mechanisms through which different teacher performance pay designs affect student achievement (for the average student and for students across the baseline achievement distribution). The sample includes a total of 8,892 students and their grade 6 mathematics teachers from 216 schools from 16 nationally-designated "poverty" counties in Yulin Prefecture (Shaanxi Province) and Tianshi Prefecture (Gansu Province) in rural, northwest China. To test the impacts of the different teacher performance pay designs, researchers designed a cluster-randomized controlled trial. In this trial, schools were randomly allocated to 4 different treatment arms: (1) control--no teacher incentive pay; (2) levels incentive--performance pay contract stipulating rewards based on student achievement levels on endline tests; (3) gains incentive--performance pay contract based on student achievement gains from baseline and endline tests; and (4) pay-for-percentile incentive--performance pay contract stipulating rewards based on student growth percentiles. Surveys were used to collect information from the students, teachers, and school administrators. Findings reveal that: (1) Only "pay-for-percentile" incentives had a positive, statistically significant impact on average student achievement; (2) Teacher incentives based on "levels" or "gains" were ineffective; (3) "Gains" incentives led teachers to only focus on certain types of students, which led to negligible learning (on average) across all students; and (4) Pay-for-percentile incentives led to score gains across all students (on average). The results of this study may have important implications for how Teacher Performance Pay Policy can be implemented in China and in other developing countries.

The education of poor and disadvantaged populations has been a long-standing challenge for education systems in both developed and developing countries. Drawing on data from two randomised controlled trials involving two cohorts of grade 3 students in poor rural minority schools in China’s Qinghai province, this paper explores the effects of computer-assisted learning (CAL) on student academic and non-academic outcomes for underserved student populations, and how interactions between the CAL programme and existing classroom resources affect the programme effectiveness. Results show that CAL could have significant beneficial effects on both student academic and non-academic outcomes. However, when the scope of the programme expanded to include a second subject (in this case, math – which was added on top of the Mandarin subject matter that was the focus of the first phase of the programme), some schools had to use regular school hours for CAL sessions. As a result, the phase II programme did not generate any (statistically) significant improvement over the first phase. 

Abstract: We present results of a randomized trial testing alternative approaches of mapping student achievement into rewards for teachers. Teachers in 216 schools in western China were assigned to performance pay schemes where teacher performance was assessed by one of three different methods. We find that teachers offered “pay-for-percentile” incentives (Barlevy and Neal 2012) outperform teachers offered simpler schemes based on class average achievement or average gains over a school year. Moreover, pay-for-percentile incentives produced broad-based gains across students within classes. That teachers respond to relatively intricate features of incentive schemes highlights the importance of close attention to performance pay design. 

Abstract: China's agricultural sector faces challenges because most farms are still small scale. China's policy is to encourage the consolidation of farms and promote farms that are larger in scale. A question that arises is: Are China's farms growing? The goal of the present paper is to determine whether large farms in China have emerged or if farms remain small. To meet this goal, we systematically document the trends in the operational sizes of China's farms and measure the determinants of changes in farm size. Using a nationally representative dataset, the study shows that in 2013 China's farming sector was still mostly characterized by small-scale farms. However, at the same time, there is an emerging class of middle-sized and larger-sized farms. Most large farms are being run by households but there is a set of large farms that are company/cooperative-run. Today, farmers on larger farms are younger and better educated than the average farmer.

Abstract: Recent attention has been placed on whether integrating Information Communication Technology (hereafter, ICT) into education can effectively improve learning outcomes. However, the empirical evidence of the impact of programmes that adopt ICT in schooling is mixed. Theory suggests it may be due to differences in whether or not the ICT pro-grammes are integrated into a teaching programme of a class. Unfortunately, few empirical studies compare the relative effectiveness of programmes that integrate ICT into teaching with the ones that do not. In order to understand the most effective way to design new programmes that attempt to utilize ICT to improve English learning, we conducted a clustered randomized controlled trial (RCT) with some schools receiving ICT that was in-tegrated into the teaching programme of the class; with some schools that received ICT without having it integrated into the teaching programme; and with other schools being used as controls. The RCT involved 6304 fifth grade students studying English in 127 rural schools in rural China. Our results indicate that when the programme is integrated into the teaching programme of a class it is effective in improving student test scores relative to the control schools. No programme impact, however, is found when the ICT programme is not integrated into the teaching program. We also find that when ICT programmes are inte-grated into teaching, the programmes work similarly for students that have either high or low initial (or baseline) levels of English competency. When ICT programmes are not in-tegrated with teaching, they only raise the educational performance of English students who were performing better during the baseline.

Purpose

Using a survey of 19,977 children in two provinces, this paper explores the prevalence, correlates and potential consequences of poor vision among children in China's vast but understudied rural areas. We find that 24% of sample students suffer from reduced uncorrected visual acuity in either eye and 16% in both eyes. Poor vision is significantly correlated with individual, parental and family characteristics, with modest magnitudes for all correlates but home province and grade level. The results also suggest a possible adverse impact of poor vision on academic performance and mental health, particularly among students with severe poor vision.

Background and Objectives: Development during the first two years of life is critical and has a lasting impact on a child’s health. Poor child nutrition can lead to a weakened immune system and deficiencies in essential micronutrients, which in turn have lasting and detrimental impacts on a child’s development. Recent studies in rural Shaanxi Province found an anemia prevalence of 54.3% among rural children aged six to twelve months. While new large-scale, quantitative research has begun to catalogue the extent of child malnutrition and anemia, no effort has yet been made to look more closely at the potential reasons for rural children’s nutritional deficiencies through a more richly textured qualitative analysis. This study aims to elucidate some of the fundamental causes of poor feeding practices that may lead to anemia among children in rural Shaanxi Province, China.

Methodology: We interviewed a total of sixty caregivers from villages participating in a study of 1808 families enrolled in a larger survey of child health and nutrition outcomes. We conducted three waves of interviews with children’s primary caregivers in seventeen rural villages within four nationally-designated poverty counties in the southern part of Shaanxi Province.

Results: The qualitative analysis reveals that poor infant feeding practices are persistent across our qualitative sample. Information gathered from our qualitative interviews suggests that proper feeding practices are impeded by two constraints: a lack of knowledge on infant nutrition and inadequate sources of accurate information on the topic. We find that the poverty does not appear to constrain child feeding practices.

Conclusion: Our research uncovers an absence of accurate information on infant nutrition, which hampers caregiver efforts to provide adequate nutrition to their children. This situation ultimately results in the failure of caregivers to supply an age-appropriate micronutrient-rich diet that can stimulate children’s physical and cognitive development, the absence of which may lead to iron-deficiency anemia among children. We suggest that steps be taken to educate caregivers in nutritional care for their infants