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ISMG vs EAMG: QCAA Marking Guides Explained

A simple explanation of the difference between QCAA ISMGs and EAMGs, and how students should use each one for assignments and external exams.

Updated 2026-05-13 ยท 2 min read

ISMG vs EAMG: QCAA marking guides explained

QCAA students hear two similar terms: ISMG and EAMG. They both describe how assessment evidence is judged, but they are used in different contexts.

ISMGs are for internal assessment

An ISMG is an instrument-specific marking guide. It is used for internal assessments such as investigations, assignments, projects and performances.

Use the ISMG while drafting. It tells you what evidence the marker needs to see for that specific assessment instrument. In a science assignment, this might include analysing evidence, evaluating limitations and justifying conclusions. In a maths PSMT, it might include formulating, solving, evaluating and communicating.

EAMGs are for external assessment

An EAMG is an external assessment marking guide. It is used for external exams that are developed and marked by QCAA.

Use the EAMG after timed practice. It helps you understand how exam responses are matched to marking decisions. For English, for example, the EAMG helps students check knowledge application, organisation and textual features in analytical essays.

How students should use them differently

Use ISMGs before and during drafting:

  • plan sections around the assessed objectives
  • check whether each criterion has visible evidence
  • revise feedback against the exact descriptor
  • avoid overworking low-value sections

Use EAMGs during exam revision:

  • mark practice answers after writing them
  • identify patterns in missing marks
  • learn the level of detail expected
  • practise matching command terms and question wording

The main mistake

The common mistake is treating the marking guide as something to look at right before submission. It should shape the work from the start.

The best question is not "does this sound good?" It is "where does this response show the evidence the marking guide is asking for?"

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