WBI · UMS
Biology grade boundaries
Edexcel IAL uses Uniform Mark Scale (UMS) across modular units. Know the cash-in rules, target the units that move your grade, then close the gap with examiner-style marking.
How UMS works (IAL)
- Each unit paper is marked in raw marks.
- Pearson converts raw marks to UMS so different sessions stay comparable.
- Your qualification grade comes from the UMS total across the units you cash in — not from a single linear paper set.
Session-by-session A/B/C raw-mark tables will publish here as we add them. Until then, treat official Pearson boundary PDFs as the source of truth for a given series.
Units in this subject
- WBI11Molecules, Diet, Transport and Health
- WBI12Cells, Development, Biodiversity and Conservation
- WBI13Practical Skills in Biology I
- WBI14Energy, Environment, Microbiology and Immunity
- WBI15Respiration, Internal Environment, Coordination and Gene Technology
- WBI16Practical Skills in Biology II
Close the gap
Boundaries set the target. Marking finds the gap.
Upload a WBI practice answer and get board-native feedback before the next sitting.