Why the Score You Need on the Final Seems Impossibly High
A surprisingly high needed final score usually comes from an ambitious target grade combined with a coursework average that's currently below that target — since the final can only pull the overall average up within its own weighted share, a large gap between current coursework average and target grade requires a disproportionately high final score to close, sometimes beyond what's realistically achievable.
This is a common, sometimes discouraging realization — but understanding the underlying math clarifies exactly why it happens and what the realistic options are.
The math behind a high needed score
As covered in the worked-example guide, the final only contributes its own weighted share to the overall grade — if coursework is running well below the target and the final's weight is relatively small, the final has to overperform significantly, within that limited weighted contribution, to pull the overall average up to the target, which can require an implausibly high score.
Why a low-weight final makes this worse
Counterintuitively, a final worth a smaller percentage of the overall grade requires a higher score to achieve the same amount of overall grade improvement compared to a final worth a larger percentage — a small-weight final simply has less leverage to move the overall average, meaning it needs to overperform by more to have the same effect.
Realistic options when the needed score is very high
If the needed score is high but still mathematically possible, treating it as a genuine, ambitious but real target for focused final preparation is reasonable — if it exceeds 100% (mathematically impossible), adjusting expectations to a more realistic target grade, or focusing on maximizing the final score as much as possible rather than chasing an unreachable specific target, is the more productive path forward.