ESG and Sustainability Reporting Assignments: GRI, ISSB and Double Materiality

ESG has moved from a voluntary communications exercise to a regulated disclosure regime in several major markets, and MBA assignments have followed. Submissions that treat sustainability reporting as a branding topic now read as several years out of date.

Know Which Frameworks Apply

• GRI — the long-standing multi-stakeholder standard, focused on an organisation's impacts on economy, environment and people.
• ISSB (IFRS S1 and S2) — investor-focused sustainability and climate disclosure, built on the TCFD structure and being adopted or adapted across a growing number of jurisdictions.
• CSRD and ESRS — the EU regime, notable for mandating double materiality and third-party assurance, and relevant to non-EU firms with significant EU operations.
• SASB standards — industry-specific financially material metrics, now under the ISSB umbrella.

Identify which apply to your case firm based on where it is listed and where it operates. Getting this wrong undermines everything that follows.

Double Materiality, Explained Correctly

Two distinct assessments sit behind the term:

• Financial materiality — how sustainability matters affect the company's value, cash flows and risk. This is the ISSB lens.
• Impact materiality — how the company's activities affect people and the environment, regardless of financial consequence. This is the GRI lens.

Double materiality requires both. A topic can be impact-material without being financially material today — and a good assignment notes that the gap between the two often narrows as regulation tightens.

Scope 1, 2 and 3 Emissions

Scope 1 is direct emissions; Scope 2 is purchased energy; Scope 3 is the value chain, both upstream and downstream. For most consumer and services firms Scope 3 is the overwhelming majority of the footprint — and the least reliably measured. When evaluating a company's disclosure, check whether Scope 3 is reported at all, which of the fifteen categories are included, and whether the methodology is stated. Selective Scope 3 reporting is one of the clearest signals worth commenting on.

Assessing Disclosure Quality

Evaluate a report against criteria rather than summarising it:

• Balance — are setbacks and missed targets reported, or only achievements?
• Comparability — consistent metrics year on year, or redefined when convenient?
• Assurance — externally assured, and to what level?
• Target credibility — interim milestones and a stated pathway, or a distant net-zero date with no near-term commitment?
• Offset reliance — how much of the target depends on offsetting rather than reduction?

Greenwashing: Be Precise

Avoid loose accusation. Anchor the analysis in identifiable patterns: selective disclosure, vague terminology without definition, targets without baselines, aggregation that hides a poor-performing division, or claims made about a product line rather than the business. Regulators in the UK, EU and Australia have all taken enforcement action on environmental claims, and referencing that context strengthens the argument considerably.

Structuring the Assignment

1. Regulatory context applicable to the firm.
2. Materiality assessment with matrix.
3. Evaluation of current disclosure against explicit criteria.
4. Gap analysis against the relevant standard.
5. Recommendations — reporting improvements and the underlying operational changes.
6. Limitations of publicly available data.