Subject analytics: class performance and outlier detection

Opening subject analytics

1. Go to Subject Analytics.
2. Select the class section and subject.
3. Select the assessment period: CA1, CA2, Exam, or Final (all components combined).

Summary statistics

At the top of the analytics view, five summary statistics are shown:

• Class Average, mean score for all students who sat the assessment
• Highest Score, the maximum score in the class
• Lowest Score, the minimum score (excluding absent students who were scored NS)
• Pass Rate, percentage of students who scored at or above the passing threshold (default 40%)
• Students Below Pass, count of students below the pass threshold

Score distribution histogram

The histogram shows the distribution of scores across 10-point bands (0–9, 10–19 … 90–100). A bell-shaped distribution centred around 60–70 is typical for a well-calibrated assessment. A bimodal distribution (two peaks) may indicate that some students need additional support while others are ready for enrichment.

Grade band breakdown

A pie or bar chart shows how many students fell into each grade band (A1, B2 … F9). This is useful for:

• Quickly seeing how many students failed
• Identifying if the entire class performed poorly (which may indicate a problem with teaching or the assessment itself)
• Comparing distribution across subjects to see which subjects are most challenging for the cohort

Student table and outlier detection

Below the charts, a sortable table shows every student with their score, grade, and whether they are flagged as an outlier:

• Low outlier, students who scored more than 2 standard deviations below the class average. Flagged in amber.
• Absent (NS), students who did not sit the assessment. Flagged in grey.
• Consistent low performer, students who have scored below the pass threshold in all three components. Flagged in red.

Click a student row to see their full score breakdown and a link to their profile.

Class comparison across subjects

1. Go to Subject Analytics → Class Overview.
2. Select the class section and assessment period.
3. A bar chart shows the class average for every subject side by side. This makes it easy to spot which subject the class is struggling with most.
4. Click a subject bar to drill into that subject's analytics.

Common mistakes

• Looking only at the class average and missing bimodal distributions, a 60% class average may hide the fact that half the class is scoring 80% and half is scoring 40%.
• Not reviewing the NS (absent) students, if a student is showing NS for all components, they may be enrolled but not attending, which is a different issue from a student who sat the exam but was missed during mark entry.