Theorising variation in engagement in professional and curriculum development: performativity, capital, systems and purpose

Increasingly, policymakers seek to improve the quality of teaching through curriculum innovations and continuing professional development (CPD) programmes. However, engagement by schools and teachers varies due to mediating influences of neoliberal policies. In this article, we contribute to understanding how these tendencies affect participation. Problematising the notion of context, we examine ways in which systemic influences interacted with participation in a government-funded mathematics professional and curriculum development programme and also with participants’ purposes. A 3-level clustered Randomised Controlled Trial (RCT) and an implementation and process evaluation were augmented by in-depth case studies, cross-case analysis and the application of theoretical constructs to interpret findings. Theories of capital, figured worlds and systemic coupling are utilised to theorise context. Different levels of engagement are partly explainable by: the interaction of schools' relative systemic advantage and disadvantage; their orientation and coupling to performativity regimes; and the alignment or dissonance between continuing professional development or change programmes and the pedagogical and CPD cultures and purposes of the ‘actors’ (schools, departments and teachers). Performativity concerns restricted what were considered legitimate outcomes in some case study schools. This depended on teachers and schools' positioning in terms of relative degrees of systemic privilege or disadvantage - understood as economic, cultural, social and symbolic capital - and also in terms of figured worlds and system coupling. The case studies provide insights into how collaborative professional learning can be fostered more productively. Methodologically, we demonstrate the power of combining methodologies and applying explanatory social theory to augment quasi-experimental paradigms

Placenta-Like Structure of the Aphid Endoparasitic Wasp Aphidius ervi: A Strategy of Optimal Resources Acquisition

Aphidius ervi (Hymenoptera: Braconidae) is an entomophagous parasitoid known to be an effective parasitoid of several aphid species of economic importance. A reduction of its production cost during mass rearing for inundative release is needed to improve its use in biological control of pests. In these contexts, a careful analysis of its entire development phases within its host is needed. This paper shows that this parasitoid has some characteristics in its embryological development rather complex and different from most other reported insects, which can be phylogenetically very close. First, its yolkless egg allows a high fecundity of the female but force them to hatch from the egg shell rapidly to the host hemocoel. An early cellularisation allowing a rapid differentiation of a serosa membrane seems to confirm this hypothesis. The serosa wraps the developing embryo until the first instar larva stage and invades the host tissues by microvilli projections and form a placenta like structure able to divert host resources and allowing nutrition and respiration of embryo. Such interspecific invasion, at the cellular level, recalls mammal's trophoblasts that anchors maternal uterine wall and underlines the high adaptation of A. ervi to develop in the host body

Place-based governance and leadership in decentralised school systems: evidence from England

Relatively few studies have explored the ways in which 'middle tier' institutional arrangements in education, such as school districts and local authorities, are responding to New Public Management reforms characterized by centralization, decentralization, marketization and disintermediation (Lubienski, 2014). This paper analyses these issues, drawing on governance (Tenbensel, 2017) and path dependency theories (Streeck and Thelen, 2005), together with evidence from five locality case studies in England (Greany and Higham, 2018; Greany, 2018). It finds that the process and impact of 'middle tier' disintermediation is uneven and often fraught, with significant implications for place-based coherence, equity and legitimacy. It shows how national hierarchical mechanisms work in concert to require and/or incentivise change across local school systems, most obviously by reducing the remit and capacity of traditional Local Authorities. This process can open up new opportunities for emerging and existing actors to work together through network and community forms of governance to counteract the negative impact of fragmentation, a process that Munby and Fullan (2016) dub 'middle out' change. However, responses and outcomes vary widely across the five localities and productive 'middle out' change is by no means a given, so the article analyses the processes at work and their impact across different contexts. It concludes by assessing implications for research, policy and practice in contemporary education systems

How can the skills of Early Years leaders support other leaders in a primary school setting?

This study investigated the leadership skills Early Years leaders demonstrated through their daily practice of teaching, assessing and teamwork within their setting. It explored how revealing the potential of Early Years leaders could have a positive impact on the leadership practice of other leaders in the same setting to improve pupil outcomes. A qualitative approach using interviews with Early Years leaders in 20 primary settings from the East Midlands and Bedfordshire areas was undertaken by two academics from two different UK based universities. Ethical guidelines ensuring anonymity and trustworthiness were followed. Using verbatim comments, data were analysed in themes against contemporary Early Years literature. Findings showed the skills of Early Years leaders could support pedagogy and practice but some of these skills were not utilized beyond this age phase. Our conclusion suggested that Early Years leaders had a range of leadership skills which were deemed specialist as they were unique to the success of the age phase, but needed to be exposed beyond Early Years for wider success and impact

London 2012 (Re)calling: Youth memories and Olympic ‘legacy’ ether in the hinterland

Engendering interest and support among young people was a key strategy for the organisers of the London 2012 Olympic Games. Part of the approach entailed promoting the event as a context and inspirational catalyst to propel young people's proclivities toward, and enduring participation in, sport and physical activity. Although a variety of participatory platforms were entertained, the discipline of physical education remained a favoured space in which enduring Olympic imperatives could be amalgamated with government policy objectives. In this paper data are presented taken from the initial three years of a longitudinal study on young people's engagement with the London 2012 Olympic Games, sport, physical activity and physical education within the UK's West Midlands region. Memory scholarship is brought together with Olympic critiques, legacy debates, youth work and discussions about physical education to conceptualise participants' anticipations and recollections of the London 2012 Olympic Games as a triptych of narrative fragments: each provides insights regarding youth experiences and the remnants of Olympic ether in the country's hinterland. The paper offers a means subsequently to think differently about how we might play with the qualitative sociological/historiographical moments (experiences, voices, accounts, stories, etc.) that we capture in and through our work

Host plant range of a fruit fly community (Diptera: Tephritidae): Does fruit composition influence larval performance?

Background: Phytophagous insects differ in their degree of specialisation on host plants, and range from strictly monophagous species that can develop on only one host plant to extremely polyphagous species that can develop on hundreds of plant species in many families. Nutritional compounds in host fruits affect several larval traits that may be related to adult fitness. In this study, we determined the relationship between fruit nutrient composition and the degree of host specialisation of seven of the eight tephritid species present in La Réunion; these species are known to have very different host ranges in natura. In the laboratory, larval survival, larval developmental time, and pupal weight were assessed on 22 fruit species occurring in La Réunion. In addition, data on fruit nutritional composition were obtained from existing databases. Results: For each tephritid, the three larval traits were significantly affected by fruit species and the effects of fruits on larval traits differed among tephritids. As expected, the polyphagous species Bactrocera zonata, Ceratitis catoirii, C. rosa, and C. capitata were able to survive on a larger range of fruits than the oligophagous species Zeugodacus cucurbitae, Dacus demmerezi, and Neoceratitis cyanescens. Pupal weight was positively correlated with larval survival and was negatively correlated with developmental time for polyphagous species. Canonical correspondence analysis of the relationship between fruit nutrient composition and tephritid survival showed that polyphagous species survived better than oligophagous ones in fruits containing higher concentrations of carbohydrate, fibre, and lipid. Conclusion: Nutrient composition of host fruit at least partly explains the suitability of host fruits for larvae. Completed with female preferences experiments these results will increase our understanding of factors affecting tephritid host range. (Résumé d'auteur