The Diploma prepares candidates for self-directed application of skills and knowledge based on fundamental principles and/or complex techniques, and recognises the capacity for initiative and judgment across a broad range of technical and/or management functions. Diplomas are offered in both the VET and Higher Education sectors, by TAFE intitutes, universities and private providers.

Vocational Education & Training (VET) courses are offered by TAFE institutions, private providers and some universities. They are accredited by the VET authority in each state or territory. Awards under the new Australian Qualification Framework (AQF) include Certificate I - IV; Diploma and Advanced Diploma (also offered in Higher Education); and Vocational Graduate Certificate and Vocational Graduate Diploma.

Courses included are Diploma, Advanced Diploma and Associate Degree. These courses develop skills or knowledge in a specific area usually associated with employment in a particular job supporting other professional staff. Courses are offered by both higher education institutions and Vocational Education and Training (VET) providers.

Natural and physical sciences including: anatomy, astronomy, atmospheric sciences, biochemistry, biology, botany, chemistry, earth sciences, ecology, food science, geology, laboratory technology, mathematics, meteorology, microbiology, oceanography, pharmacology, physiology, physics, soil science, sports science, statistics, zoology.

Industry sectors covered include: Chemical, Hydrocarbons & Refining; Laboratory Operations; Manufactured Mineral Products; Plastics, Rubber & Cablemaking; and Process Manufacturing.

Year 12 is the last year of secondary school, and the last stage of the two year senior secondary certificate. The name of the Certificate varies according to the state or territory.

The Certificate III is awarded on completion of a vocational course at a skilled level, and is offered through the vocational education & training sector. It may provide entry to a relevant Certificate IV.