1. Department for Education, DfE, (2014). Assessment, curriculum and qualifications—research priorities and questions. Available from https://www.gov.uk/government/uploads/system/uploads/attachment_data/file/315159/Assessment_curiculum_and_qualifications_research_priorities_and_questions.pdf (November 21, 2015)
2. Department for Education and Skills, DfES, (2006). The Science, Technology, Engineering and Mathematics (STEM) Programme Report Available from https://www.nationalstemcentre.org.uk/res/documents/page/stem_programme_report_2006.pdf (November 21, 2015)
3. Garnham, D. (2011). National Curriculum: Now and For the Future, in SCORE Conference summary report. Available from http://www.score-education.org/media/7623/finalcaq.pdf (November 21, 2015)
4. Gorard, S. (1999). Examining the paradox of achievement gaps, Social research update (26), Autumn edition. Available from http://sru.soc.surrey.ac.uk/SRU26.html (January 10, 2015)
5. Quantitative methids in educational research: the role of numbers made easy;Gorard,2001