E-Tray Exercise Practice and Tips
An e-tray gives you a role, an overloaded inbox and less time than the work needs. The exercise is the prioritisation, not the typing speed.
An e-tray exercise is a digital job simulation. You are given a role at a fictional organisation, a brief describing the situation, a set of reference documents that stay available throughout, and an inbox of emails, memos and requests. Within a fixed time you decide what to do with each item and, in most versions, draft at least one written response in full.
It is the standard first exercise on many graduate assessment days and is used heavily in public sector recruitment. UK Civil Service and Fast Stream selection has long used an e-tray format, and US employers often call the same thing an in-basket exercise. Whatever it is called, the mechanics are consistent: too much to do, documents that contradict each other slightly, and at least one item that looks urgent and is not.
Most e-trays score in two parts. The multiple-choice or ranking decisions are marked against an expert key reflecting the most effective action, and any written response is marked against a rubric covering structure, use of evidence, risk handling and tone. Knowing that split tells you where to spend your time: the decisions are quick and cheap, the written response is where marks are won and lost slowly.
E-Tray Exercise scenarios you can practise
Each one is timed, set in a named sector and scored against an expert key, with AI feedback on the written answers. Sign up to play the free sample in full.
E-Tray: Product Launch
FreeStep into a marketing manager’s inbox on launch week. Triage emails, prioritise competing demands and make judgement calls under a 45-minute clock.
Corporate & Business · 45 minutes
E-Tray: Graduate Analyst (Banking)
You are a first-year analyst at a corporate bank with a client pitch tomorrow. Juggle a compliance flag, a data error and competing senior requests against the clock.
Finance & Banking · 45 minutes
E-Tray: Associate Consultant
You are an associate on a cost-reduction project for a retail client. Handle a demanding client email, a scope change, a flawed analysis and a staffing conflict under time pressure.
Corporate & Business · 45 minutes
E-Tray: Policy & Delivery Officer
You are a policy officer in a government department with a ministerial submission due. Balance a data-protection incident, a stakeholder complaint and a briefing deadline against the public-service code.
Public Sector · 45 minutes
E-Tray: Store Operations Manager
You are a store manager on a peak trading Saturday. Handle a staffing shortfall, a health & safety hazard, a customer complaint and a promotion stock issue, safely and in the right order.
Corporate & Business · 45 minutes
E-Tray: Associate Product Manager
You are an APM the week before a major release. Weigh a production incident, a launch-scope trade-off, a sales escalation and a security flag, and communicate the call clearly.
Corporate & Business · 45 minutes
E-Tray: Graduate Data Scientist (Model Launch Week)
You are a graduate data scientist, secondary on model support during the launch week of a new credit-decision model. An overnight data incident, an amber drift alert, a fairness report from an outside researcher and a commercial manager’s “tiny” threshold change all land before 09:00.
Engineering · 45 minutes
E-Tray: Graduate Software Engineer (On-Call, Release Week)
You are a graduate software engineer, secondary on-call during release week at a venue bookings platform. An overnight checkout incident, a red CI pipeline, a security disclosure and a PM’s “tiny” scope change all land before 09:00.
Engineering · 45 minutes
What an e-tray is scored on
Prioritisation
Whether you identified what genuinely had to happen first. Regulatory, safety and legal items outrank an internally urgent request from someone senior, and the exercise usually contains exactly that trap.
Use of the documents
The pack always contains the fact that settles the decision: a policy line, a budget figure, a date. Answers that ignore it are marked down even when the instinct was reasonable.
Decision effectiveness
Options are graded by how effective they are, not right or wrong. Choosing a defensible middle option scores partial credit, so answering everything beats leaving items blank.
Written communication
Structure, clarity, correct audience and professional tone. A reply to a client is not a reply to your manager, and the rubric notices which one you wrote.
Attention to detail
Dates that do not line up, a figure that contradicts the brief, a request that breaches the policy in the pack. Spotting one of these and saying so is often worth more than finishing an extra item.
Judgement about escalation
Some items should go to someone else, and doing so is a strength when you say why and what you have already done. Escalating everything, or nothing, both read as poor judgement.
A method that works under the clock
- 1
Spend the first three minutes on the brief
Read your role, your authority and the constraints before touching the inbox. Candidates who skip this end up making decisions that are not theirs to make, which is a scored error rather than an oversight.
- 2
Scan every item before answering any
A thirty second skim of the whole inbox tells you which items relate to each other. Answering top to bottom means you commit to item two before reading the item that contradicts it.
- 3
Apply a fixed sorting rule
Legal, regulatory and safety first, then commitments with a deadline today, then high value work, then everything else. Decide it in advance so you are not inventing a policy while the timer runs.
- 4
Budget the written response early
Work out how many minutes the written item needs and protect them. Running out of time with an unwritten response costs far more than leaving two decisions on lower value items.
- 5
Lead the written answer with the recommendation
First line: what you propose. Then two or three reasons citing the documents, then risks and next steps. Assessors mark whether the reader could act on it without a follow-up conversation.
- 6
Name what you are not doing
Where the format allows a note, say which items you deprioritised and why. Stated trade-offs are evidence of judgement; silent omissions look like you ran out of road.
- 7
Keep two minutes for a pass over the pack
Check your figures against the documents and your written answer for the obvious errors. This is the cheapest accuracy mark on the exercise.
Mistakes that cost marks
Working in inbox order
The order is designed to mislead, usually with something loud and unimportant at the top. Triage first, then work.
Deferring to seniority automatically
A request from a director that breaches a policy in the pack is still a problem. Assessors include it to see whether you notice.
Writing a long reply to the wrong person
Check who the item is from and what they need. A detailed technical answer sent to an angry customer scores badly whatever its content.
Leaving items blank
Partial credit exists across the option set, so a considered second-best answer earns something and an empty item earns nothing.
Never opening the documents
Candidates under time pressure treat the reference pack as optional. It is where the deciding facts are, and ignoring it is visible in the marks for almost every item.
Practising untimed
An e-tray done at leisure teaches you nothing about the only difficulty it has. Run it against the real clock or do not bother.
Practise it against the clock
Timed e-tray, in-tray, written, presentation, group and role-play scenarios, scored against an expert key with AI feedback on every written answer.
Frequently asked questions
What is the difference between an e-tray and an in-tray exercise?
They assess the same thing. An in-tray is the traditional paper version where you work through a physical desk of memos and letters; an e-tray is the digital version delivered in a browser. Prioritisation, judgement and written communication are marked in both.
How long does an e-tray usually last?
Commonly 45 to 60 minutes, sometimes 90 where a long written response is included. The invitation usually states it, and the exercise is designed so that finishing everything comfortably is not possible.
Can I use a calculator or take notes?
Notes are normally fine and worth making. Calculator rules vary and are stated at the start. Where numbers appear in an e-tray they are usually simple enough that the risk is misreading the table, not the arithmetic.
Is the written response marked as harshly as a written exercise?
It is marked against a rubric in the same way, but expectations are scaled to the length. A short, well-structured reply with a clear recommendation and an accurate use of the pack is what a strong answer looks like.
Do employers use the same e-tray as each other?
No. Employers and their assessment providers write bespoke scenarios and marking schemes. The format and the behaviours assessed are what transfer between them, which is what practice can give you.
How can I practise an e-tray realistically?
CogniPrep e-tray scenarios run exactly as the real thing does: a role brief, reference documents that stay open, an inbox and a countdown. Decisions are scored against an expert key with a per-competency breakdown, and the written items are marked by AI against a rubric.
The rest of the assessment day
Assessment days rarely run one exercise in isolation. Most pair the exercises with an interview and an aptitude test, and many run a situational judgement test as part of the earlier sift. Our employer guides set out what specific companies run at each stage.
Practise this next
Practise a timed e-tray
Role brief, reference documents, an inbox and a clock, scored against an expert key.
Written exercise tips
The structure that earns marks on the written part of any e-tray.
Situational judgement tests
Single-best-response judgement, marked the same way, usually earlier in the process.