Case studiesHigher education
Charles Darwin University
A single semester of paid digital marketing across search, paid social and display generated 9,187 student applications for Charles Darwin University. At the university's 59% application-to-enrolment acceptance rate and stated A$10,000 lifetime value per enrolled student, A$54.01M of attributable revenue from the activity. 16.58% of CDU's published annual top line in the same period.
Outcome
in attributed revenue from a single semester of digital activity· Single-semester intake
Client
Charles Darwin University
Industry
Higher education
Region
AU + South America
Engagement length
Single-semester intake
Services touched
- Search
- Social
- Data
01The challenge
A 4.4× CPA overrun on the previous agency, and a Vice-Chancellor who wanted the number in dollars.
Charles Darwin University, ranked among the top 100 universities in the Asia-Pacific, was preparing for a major intake cycle with student application targets across 17 faculties. The previous agency had delivered applications at A$220 cost per acquisition, 4.4× more expensive than the A$50 they were originally engaged for.
The brief was direct: rebuild the entire digital recruitment programme, hit the application targets, and demonstrate commercial return that the university's executive could actually use in board reporting.
Most digital marketing reporting stops at clicks, conversions and cost per acquisition. Those metrics matter, but they do not tell a Vice-Chancellor what the activity is worth to the institution. The work had to be measurable in the language the executive uses: dollars of attributable revenue against a known top line.

02The approach
Seventeen faculty sub-campaigns, four channels, ring-fenced budgets, one revenue model.
The campaign was rebuilt across paid search, paid social, display and retargeting, with separate budgets, audiences, creative and conversion paths for each of the 17 faculties. Cross-faculty optimisation was not permitted because faculties owned their own budgets. The campaign had to make its margins inside each faculty's allocation.
The revenue attribution model was built on two figures the university already published: the historical 59% acceptance rate from submitted application to confirmed enrolment, applied to every measured application as a conversion multiplier; and the stated A$10,000 lifetime value per enrolled student, used as the revenue multiplier.
The result was a board-reportable revenue figure rather than a CPA-only performance dashboard. Every faculty's spend rolled up into a measurable contribution to top-line revenue.

03The result
A$54.01M of attributable revenue, 16.58% of the institution's top line.
Across the semester campaign, 9,187 student applications submitted at a A$27.08 average cost per acquisition, against A$220 from the previous agency. An 8.12× improvement on the inherited benchmark.
Applying the 59% acceptance rate, approximately 5,420 confirmed enrolments attributable to the campaign. At A$10,000 stated lifetime value per enrolment, A$54.01M of revenue attributable to the activity. Against CDU's published A$325.7M total revenue in the same period, the campaign accounts for 16.58% of the institution's top line.
For an executive team accustomed to measuring digital marketing in CPA basis points, the number shifts the conversation. Recruitment marketing is not an overhead. It is a measurable revenue line.

The deeper outcomes
Behind the headline metric.
- 7.24% campaign-wide conversion rate (click to application) across 126,000+ clicks
- A$1.55 average cost per click across all 17 faculties and four paid channels
- All 17 faculty sub-campaigns delivered within their ring-fenced budget allocations
- Board-reportable revenue model: faculty-level spend rolled up to total revenue attribution, evaluating marketing as a measurable revenue line rather than a cost centre
In the work





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