How to mark your own accounting practice work

Doing practice questions is only half of revision. What you do afterwards decides whether the effort turns into better marks.

Most students mark too lightly. They compare their answer to the solution, write a score at the top, feel briefly good or bad and move on.

That wastes the most valuable part of the exercise. Marking well is a skill you can learn.

Why the score is the least useful thing

A score tells you little you can act on. “Seven out of ten” does not say why you lost three marks, whether the same mistake will come back or what to change. A score also invites a purely emotional reaction, then a quick move to the next question, which is when the learning is lost.

The real question is not “how many did I get?” but “what kind of mistakes did I make, and why?”

Two students can both score seven out of ten and need different things. One keeps making careless arithmetic slips. The other keeps choosing the wrong treatment.

Marking against a model answer

Mark against a model answer or worked solution. Go through it line by line, not just at the final figure.

In accounting, a final total can be right for the wrong reasons, or wrong because of one early slip that flowed through. Comparing only the bottom line misses both.

Go through your answer and the model in step order. At each stage, ask whether you took the same step, and if not, why the model did what it did.

Pay particular attention to points where one decision shapes everything after it. Examples are the treatment of an adjustment, which side an entry goes on, or whether an item was included at all.

Diagnosing the type of error

Good self-marking means classifying each mistake, not just spotting it. Most accounting errors fall into four types:

• Careless slip: you could have caught it yourself, such as a transposed figure or an addition error. The knowledge was there.
• Method error: you chose the wrong treatment, such as the wrong adjustment or the wrong heading.
• Knowledge gap: you did not know the rule or definition.
• Misreading: you answered a slightly different question, usually by skimming.

Each type needs a different fix. Careless slips need slower, checked working. Method errors need you to revisit when and why a treatment applies.

Knowledge gaps need you to go back to the concept. Misreadings need more deliberate reading. Write the type beside each error in a word or two.

Keeping an error log

An error log is a running list where, after each marking session, you note the question, the mistake and its type. After a few weeks it gives the most honest picture of your weaknesses, more useful than a stack of scored papers.

Its value is in the patterns. You may find that half your lost marks come from one recurring method error, or that you keep making the same slip under time pressure. These patterns are invisible in one question and clear across a log.

Keep entries short and specific. “Forgot to reduce the debtors figure by the bad debt before calculating the provision” is useful. “Provisions, bad” is not.

Being honest with yourself

Self-marking only works if you are strict. It is tempting to award a mark because you “basically knew that”, or to skip a mistake you would rather not have made.

Each generous decision is a mark you may lose for real later. Mark as an examiner would: if the required element is not clearly there, it does not count.

Do not look at the answer too soon. If you check the model the moment you feel unsure, you never find out whether you could have reached it.

Re-attempting after a gap

Understanding a mistake is not the same as fixing it. Reading the correct method and nodding along is still recognition. The proof comes when you can produce the right answer unaided, and the fair test is to re-attempt after a gap.

Do not redo a question straight away. Wait a few days, then attempt the same or a very similar question from a blank page.

If you get it right, the fix has held. If you make the same error again, add another log entry and leave another gap before the next attempt.

Turning marking into a routine

Build these steps into every practice session:

• Attempt the question from a blank page.
• Mark line by line against the model.
• Classify each error.
• Log the patterns.
• Schedule a re-attempt after a gap.

This takes a little longer than writing a score, but it makes practice move marks.

Marking your own work is hard, because it asks you to judge answers you are not yet sure how to produce. If your child would like help diagnosing errors and building a useful error log, one of our teachers can mark alongside them and name each mistake.

They will also coach the re-attempts. Book a trial class to see how.