The (inter)national curricular policies of the late 1980s and early 1990s distinguished between two major levels of curricular decision-making: the central level, which defines the core curriculum (Skilbeck, 1994) or national curriculum; and the contextual decision-making level, which encourages more autonomy for schools and teachers in terms of contextualised curriculum management based on a curricular development plan/project (Roldão & Almeida, in press). This should serve as a reference for the curricular development work that teachers conduct in class. In the Portuguese case, this level of contextual decision was formally resulted in the production of school curricular projects (PCE), which in turn were transformed into class curricular projects (PCT).
However, the national curriculum assumes different forms depending on whether we consider centralised or decentralised countries. In centralised countries (Portugal, Spain, Italy, France), the national curriculum has always been the only curriculum. What was new in those contexts was the curricular autonomy granted to schools. Conversely, in decentralised countries (England, Norway, Finland) the opposite occurred: the national curriculum was introduced as a common regulating factor that would act on the traditional diversity of options that schools could selected from ― that were standardised via external assessments.
The emergence of the national curriculum as a core curriculum led to a tendency in policy to conceive teachers as agents of change (e.g. Young, 1998, Goodson, 2003, 2014; Priestley, 2011, Priestley et. al, 2012). In the past twenty years, the (re)emergence of the national curriculum ― such as Scotland's Curriculum for Excellence and the New Zealand Curriculum (Priestley, 2011) ― has implied a renewed vision of teachers as developers of curriculum and of professional knowledge. Governments have established a relationship between patterns of professional knowledge and educational change, as well as the need for a revivified form of teacher professionalism (Goodson, 2003). In countries with a centralised tradition, this was an important change after several decades of policies that de-professionalised teachers and withdrew their curricular autonomy, which had been an important dimension of the teachers' professionalism (Priestley et. al., 2012).
Two decades after the implementation of curricular policies that introduced more autonomy, they have had a two-fold effect that has been identified in international documents (UNESCO, 2015; OECD, 2014): on the one hand, national curricula implemented in countries that have a localised curricular tradition have become more encompassing and detailed in the several revisions made after the first versions were published in the 1990s (FNBE, 2016). However, in these systems, that intensification did not result in a significant loss of the traditional autonomy of schools and teachers, since the school and the teaching culture in these societies are strongly grounded on the autonomy of local curriculum management. On the other hand, in countries that have a centralised administrative tradition, the attempts to create dynamics of contextualised curricular management by schools did not achieve the desired projection (Roldão & Almeida, in press; Bolívar, 2013).
In the Portuguese context, the literature demonstrates that these curricular decision-making thresholds for schools were called into question, which turned PCE/PCT into bureaucratic documents. The adoption of the term national curriculum to designate the core curriculum, which made sense in Northern-European countries due to its novelty factor, in Portugal has never been understood, since the sole referent in the Portuguese curricular culture has always been, the national one, from which arise the prescriptions that are profoundly engrained in the acting of schools.
Currently, Portuguese decision-makers ― again upholding an updated curricular policy that converges with the international trends and implies strengthening the contextual dimension (OECD, 2015; UNESCO, 2014, 2015), have reintroduced in the political agenda since 2015 the discussion on curricular management.