How is a degree classification actually calculated?
By a formula set by each university individually, weighting modules by level and credit — which is why two students with identical marks at different institutions can receive different classifications. There is no national formula, and this surprises almost everyone.
What is broadly common:
The first year usually does not count toward the final classification on a three-year English bachelor's degree, though it must normally be passed to progress.
Later years are weighted more heavily — commonly something like 30:70 or 40:60 between second and final year, with variations.
Modules are weighted by credit value, so a larger module counts proportionally more.
The boundaries are typically 70% for a first, 60% for an upper second, 50% for a lower second and 40% for a third.
Where universities differ substantially:
The weighting between years.
Whether the dissertation carries extra weight.
Discounting rules, where a number of the weakest credits may be excluded.
Borderline rules, determining what happens within a few percent of a boundary — commonly a preponderance rule, where a majority of credits in the higher band lifts the classification.
Whether a second algorithm runs in parallel — a mean-based calculation and a profile-based one — with the better outcome awarded.
What follows practically:
Read your own institution's regulations, since general advice is unreliable here. They are published and specific.
Final-year marks matter disproportionately, which changes how effort should be allocated.
Borderline cases are worth understanding in advance, because knowing that one more credit in the higher band could lift a classification changes decisions while there is still time.
Integrated master's and Scottish degrees use different structures again, and Scottish honours degrees run four years with their own weighting.
Why UK employers increasingly look past it. Classification inflation, institutional variation and the rise of contextual recruitment have reduced its weight in hiring — though a 2:1 threshold still filters many graduate schemes automatically.