Three weeks of attendance data can reveal recording gaps, recurring session or weekday patterns, and pupils or cohorts who need a closer look. It cannot establish a cause or a dependable long-term trend.
For schools in England, treat this as an early review window. Check possible sessions and missing marks first, compare like with like, then connect any signal to pupil, family and school evidence before deciding what to do.
What can three weeks show?
The first answer is often about the record itself. Three weeks is long enough for repeated gaps and contrasts to appear, yet short enough for one unusual day to dominate a percentage.
Is the source complete enough to analyse?
Count possible sessions, recorded sessions and unresolved marks. Check admission and leaving dates, non-compulsory-school-age pupils, timetable exceptions and any custom codes before comparing rates.
DfE's Monitor your school attendance guidance warns that results can change when the MIS is updated. A tidy chart built on incomplete sessions is still incomplete, only with better manners.
Is a weekday or session pattern repeating?
Separate morning and afternoon sessions. Then compare weekdays, full and broken weeks, and relevant timetable points. Three lower Friday afternoons deserve a question, not a verdict.
Compare the same point last year where coverage and calendar shape permit it. DfE's pattern tool notes that early-year patterns are less clear because fewer days are available.
Is the signal concentrated in a cohort?
Review year groups, classes and relevant pupil characteristics with both counts and possible sessions visible. Small groups need particular care because one pupil can move the rate sharply.
A group difference is a prompt to inspect access and support. It is not an explanation about SEND, disadvantage, family engagement or motivation.
How should you read an early percentage?
Start with the fraction behind it. For each view, retain attended sessions, possible sessions, pupils included, pupils excluded and unresolved records. Record the date window and extraction time.
Compare the same cohort definition across periods. A year-to-date figure, one school week and a previous full term answer different questions. Putting them on one chart does not make them equivalent.
Use days, lessons and experiences missed when speaking with families. DfE's 2026 communication guide says these are often clearer than percentages and recommends supportive, personalised contact with a route to help.
Three weeks is not a statutory attendance threshold. The statutory guidance expects schools to monitor weekly patterns and target support, while formal decisions depend on the relevant facts, authority and process.
When does a pattern justify a closer look?
Investigate when a signal repeats, changes quickly, concentrates around a school experience, or conflicts with another record. Start with a question that the school can answer or test.
- Are the same sessions missing, and are the marks settled?
- Does the pattern remain when the denominator and cohort are held constant?
- What changed in timetable, transport, provision, staffing or school routine?
- What do the pupil and family say helps or gets in the way?
- Which small school-owned action can be reviewed on a stated date?
The EEF evidence summary reports promise in responsive approaches that identify and address a pupil's specific barriers. The pattern helps choose the question; it does not choose the intervention.
Follow one signal from chart to question
The details below have been combined to demonstrate the review. They do not describe a pupil, school or Student Radar customer.
A Year 8 group shows lower recorded attendance on Monday and Wednesday afternoons across the first three weeks. The difference persists after unresolved marks are corrected, but the window remains small.
Pupil-level review shows that four pupils account for much of the difference. Two have no repeated pattern. The other two miss sessions after a room and staffing change.
One pupil's SEND plan records a quieter transition, but delivery evidence is missing for two of the affected days. The pupil says the new route is unclear. Family contact records no transport difficulty.
The professional question becomes specific: was the planned transition support available, and does a five-day test of a clearer handover improve access to the afternoon lesson?
The pastoral lead owns the test. The SENCo checks provision delivery, and the pupil can report whether entry feels clearer. Attendance, delivery and pupil voice are reviewed together the following week.
Even if attendance improves, the review cannot prove that the room change caused the earlier absence. It can show whether the agreed support happened and whether the next decision has better evidence.
What can't three weeks prove?
It cannot establish why a pupil was absent, predict persistent absence, diagnose a need, prove that a family will not engage, or show that provision caused an outcome.
It cannot replace the school's safeguarding, SEND, health or attendance procedures. If a record raises a safeguarding concern, follow the child protection policy and involve the DSL or deputy through the established route.
It also cannot make unlike periods comparable. Inset days, staggered starts, religious observance, local events and broken weeks can alter the shape of a short window.
How do you keep the evidence route open?
Student Radar's Attendance Analytics can review weekly endpoints, AM and PM sessions, date ranges and authorised cohorts while keeping recorded-session coverage visible.
The Heatmap can take authorised staff from a cohort signal towards pupil context. Attendance Playbooks can hold a chosen support step and its review evidence.
These views do not explain absence, select support or make enforcement and safeguarding decisions. Staff remain responsible for checking the source, hearing the pupil and family, and using the right professional route.
What should the review produce?
- A corrected source record with missingness still visible.
- One clearly bounded signal, stated with its denominator.
- A pupil or cohort question that another professional can challenge.
- An owner, a proportionate action and a near review date.
- A note of what evidence would change the decision.
Use the cohort analysis guide for a deeper group comparison. Use the pupil-level change card when one pupil's movement needs review.
When a conversation is needed, the attendance support meeting agenda helps turn evidence and family knowledge into owned actions. To review the workflow with your school's roles, request an attendance-focused walkthrough.
Sources and further reading
- Department for Education, Working together to improve school attendance, statutory guidance for England, published 6 May 2022 and updated 9 July 2026.
- Department for Education, Monitor your school attendance: user guide, published 27 March 2024 and updated 3 September 2026.
- Department for Education, A guide for schools on communicating with parents about attendance, published 9 June 2026 and updated 19 August 2026.
- Department for Education, School attendance: annual and one-off events driving short-term absences, published 9 June 2026.
- Education Endowment Foundation, Supporting attendance: summary of evidence, summarising its March 2022 rapid evidence assessment of 72 studies.