Filling out the Enem answer sheet accurately is essential to ensure answers are recorded correctly. The exam guidance described in the original report calls for a black-ink ballpoint pen with a transparent barrel. Marks made with other colors or with a pencil may not be read properly by optical scanners, while bringing a pen that does not have a transparent barrel can lead to disqualification under the exam rules cited in the report.

Candidates should check the personal details printed on the sheet, sign it and copy the security sentence shown on the question booklet. They must also mark the color of their test booklet. Because question order varies between the blue, yellow, white and pink versions, selecting the wrong color or leaving the field blank can affect how the answers are graded.

For each multiple-choice question, candidates should fully shade one circle, from A to E, without marking outside its boundary. The report recommends setting aside at least 30 minutes before the end of the exam to transfer answers and check the sheet, rather than leaving the task until the final minutes. On the first day, students should answer only in the section for the foreign language they selected, English or Spanish.

The answer sheet is the only one issued to each candidate, and the report says there is no replacement if a marking is wrong. Candidates should not use correction fluid, erase the mark or scrape the paper. Marking two alternatives for one question results in that item being invalidated, while damaging the sheet could interfere with scanning.

The report also warns that failing to sign the sheet or copy the security sentence may result in the exam being annulled. The official answer sheet must be handed to the room supervisor before candidates leave; the question booklet may be taken home only after the minimum time in the room set by the exam rules.

Sources: CNN Brasil.