Create a custom answer key from your own question paper

Your institute writes its own mock papers, so the preset keys don't apply — you need a custom answer key for each paper, with correct responses for every booklet code. This tutorial is the fast, mistake-proof workflow for typing keys and reusing them across your test series.

The two classic key mistakes (and how this workflow prevents them)

• Swapped codes — Set B's answers pasted under Set A. The evaluation then runs mathematically perfectly on the wrong key.
• Short key — the paper has 100 questions, the key has 90. The last 10 score as unattempted for every student, silently.

The workflow below kills both: keys typed one full code at a time (not column-jumping) and a count check + 5-question spot-check before saving.

Before you start

• The question paper, printed.
• A printed key grid: rows = question numbers, columns = booklet codes (A, B, C, D). Your paper-setter usually has this; if not, draw one — it takes two minutes and prevents the swapped-code error at the source.

Steps

1. Prepare the master key on paper

With the paper in hand, mark the correct option for every question on the grid. Solve quickly but attentively — this paper copy becomes the reference for spot-checking, so treat it as a document, not a scratchpad.

2. Create the key in CheckOMR (By Navodaya Study)

Go to Answer Keys, create a new key, and name it after the exam — "Class 10 Mock 12", "JNVST Sunday Sept", whatever your batch-naming pattern is. Set the question count to match your paper exactly. If your paper has 100 questions, the key must have 100.

3. Type responses for each booklet code

Enter the correct option for every question, finishing one code completely before starting the next. Typing straight down one column while the grid sits beside you is much faster and safer than hopping between codes mid-page. If a question was dropped or has multiple correct answers per your official solution, encode your institute's policy consistently.

4. Verify, save, and reuse

Before saving:

1. Count check — the key's question count equals the paper's question count.
2. Spot-check — pick 5 random question numbers, compare the typed answer against the paper (or your solved grid). Five catches nearly every slip.

Save. For your next mock with the same paper pattern, copy this key and edit only the changed answers — a 30-second job instead of a re-typing session.

Keys and scoring belong together

The marking scheme (marks per correct, penalty per wrong) rides on the key — see negative marking setup to configure it for this exam before the first batch.

What's next

• Set up answer keys — presets vs custom keys, when to use which.
• Upload your first batch — put the key to work.