Assessment Handbook: Section 13
©University of Reading 2024 Sunday 1 September 2024 Page 5
13.2.4 Anomalies in assessment which might lead to scaling include significant disruption to
an examination (e.g. a fire alarm), a flaw in the design of an assessment (e.g. in
hindsight, a question/assessment is recognised to be significantly more difficult than
originally supposed), unforeseen disruption to the delivery of a module, and must be
evidenced. Particular care should be taken in deciding that an assessment is flawed;
supporting evidence may include statistical comparison with similar modules within
year and across years, together with feedback from students, but evidence needs to
be carefully evaluated by the Examiners and must be considered compelling.
13.2.5 Scaling is not used to achieve a set distribution of marks, where x% achieve a First
Class mark, y% achieve a 2:1 mark, etc. The University does not mark on the basis of
norm-referencing.
13.2.6 It is expected that scaling would only be used in respect of assessments which have
a prescriptive, detailed marking scheme which allows very limited scope for
interpretation. Such assessments are likely to be quantitative in nature.
13.2.7 Where the marking scheme for a module allows the mark to reflect a holistic
judgment on a piece of work (e.g. a marking scheme for an essay), the need for
scaling would be highly unusual. There may, however, be circumstances where
scaling might be appropriate, for example where there was a defect in the delivery of
the module.
13.2.8 The Internal Examiners, in consultation with the External Examiners, are responsible
for considering anomalies in assessments and determining whether and how scaling
should be applied. In making such decisions, the Examiners must exercise their
academic judgment following consideration of relevant statistical data (e.g. the
mean and distribution of marks before and after the proposed scaling, the mean and
distribution of marks for the module from previous years, and the mean and
distribution of marks for other modules for the same cohort).
13.2.9 The approach adopted to scaling will depend on the issue being addressed.
13.2.10 Scaling can be applied at the level of a part of a question, a question, or an
assessment. It cannot be applied at the level of a Part or a Final result, nor at the level
of a Module when there is more than one item of assessment.
13.2.11 Scaling can be applied to all marks for the assessment, question or part of a question,
or to specific mark ranges, or to groups of similarly affected students; different
adjustments may apply to different mark ranges or groups of students, depending
on the circumstances, provided in all cases the principle of equity is maintained and a
rationale for such differences is stated.
13.2.12 Marks can be scaled up or down.
13.2.13 The School is required to keep a record of any decision to apply scaling, which should
specify the rationale for the decision, the evidence used in reaching the decision, the
views of the External Examiner and the method of scaling used.
13.2.14 Possible methods of scaling include: adding or subtracting a number to/from the
marks of all students within an affected group (with marks truncated to 0% or 100%
if necessary), changing grade boundaries for some or all classes and linearly mapping
the mark (e.g. an undergraduate pass could become 35% and the third class/2.2
boundary could become 48%, meaning if the original mark was z%, lying between 35
and 48, then the scaled mark would be
40 + (z – 35)×(50 – 40)/(48 – 35)).
13.3 ADDITIONAL ASSURANCE FOR
SPECIFIED MARKS
13.3.1 Given that specified marks are critical to a student progressing from one Part to the next, or
passing or failing a final award, the University seeks additional assurance in respect of these
marks.