- Why students lose marks they should have kept
- Check 1: Grammar & sentence structure
- Check 2: Formatting & layout
- Check 3: Images, figures & tables
- Check 4: Citations & references
- Check 5: Plagiarism
- Your final-day workflow
- Printable pre-submission checklist
- Common mistakes that cost marks
- Why order matters
- When to ask for a second pair of eyes
- Related guides
- Frequently asked questions
Why students lose marks they should have kept
Most students work hard on their assignments. They research, write, and spend hours on it. But right before submission, they just hit send without checking anything. That one habit costs them marks they could have easily kept.
For example, in many cases, students do not even realize their content has plagiarism issues. They submit without checking.
Plagiarism is just one thing. There are other checks too. Formatting mistakes, grammatical errors, wrong citations, and missing requirements are some of the most common reasons students lose marks on assignments they actually worked hard on.
In this blog, we are going to walk you through five essential checks every student should do before submitting an assignment.
“Marks are rarely lost on the argument. They leak out through formatting, captions and a reference list nobody checked twice.”
Check 1: Grammar & Sentence Structure
Small grammatical mistakes give a bad impression to the teacher. Your grades can be affected by this even if your research is strong.
When you have finished your assignment, read it over once. See if the sentences make sense. Look for misspelled words, wrong tenses, and missing punctuation.
You can use online tools for a quick review. For instance, Grammarcheck.ai is a popular AI tool. It looks through your content and flags the mistakes. It saves you time and catches errors you might miss when you proofread yourself. It also offers corrections so you can get rid of mistakes on the spot.
Check 2: Formatting
Many students submit assignments without checking formatting requirements. The teacher has already provided the guidelines. Font size, line spacing, heading styles, margin size, almost every little thing counts. You will lose marks if your assignment is not in the required format. Even if the content is good, presentation matters.
Recheck the assignment guidelines before submission. Make sure you used the correct font.
Check your line spaces and make sure the whole assignment has the same line spacing. Also, make sure your headings are properly formatted. Another thing students often ignore is page margins. The default margin size is one inch all around. If yours is different, fix it before you submit it.
Check 3: Image Position and Quality
Images in assignments often get ignored during the final review. Students add them while writing and never check them again before submitting. That causes several common mistakes.
Missing captions are one thing. A chart, graph, or diagram should have a caption below it. Sometimes captions get displaced when students add some extra words above an image or move a paragraph. The same applies to images. If we move the position of one image on a page, the other ones may sometimes move as well. So you need to look carefully for each image and caption position before you submit the assignment.
Poor image quality is a common problem, too. If you add a blurry image, it gives a bad impression. You can enhance the image quality using online image editing tools like Canva easily. Alignment is the last thing to check. The image should be centered or aligned properly with the page margins and not tilted, not stuck to one side awkwardly.
Go through every image in your assignment one more time before submitting. Fix captions, check placement, and confirm the quality is good.
Check 4: Citations & References
Citations and references are one of the most common areas where students usually make mistakes. Many don’t even look at this part before submitting.
The first thing to look at is citation position. It should be placed at the end of the information it supports. Review carefully if you mistakenly added it somewhere in the middle of lines or at the end of a paragraph. The citation style is another important thing to look at. All the citation styles, like APA and Harvard, have their own set of rules.
The list of references format matters, too. Some styles require a hanging indent, where the first line is flush left, and the remaining lines are indented. A lot of students simply write all lines aligned to the left. This is wrong for such styles as APA.
Each reference entry should have uniform spacing. Double spacing is generally used, and no extra blank lines are added between entries.
Another little thing students skip is alphabetical order. References are generally ordered by the last name of the author. Check that order before submitting the assignment.
“A reference list is a promise: every claim is traceable. Break that promise by accident and it reads the same as breaking it on purpose.”
Check 5: Plagiarism
Plagiarism is not always on purpose. Many times, you read something to understand it. Then you write it in your own words. But sometimes the wording and sentences can match the original.
Common phrases and technical terms cause accidental similarity, too. You cannot change those words much. But the rest of the sentence around them should be your own.
Direct quotes without proper citation are another mistake. If you copy a line from somewhere, it needs quotation marks and a citation right there. Without that, it counts as plagiarism even if you mentioned the source elsewhere in your assignment.
Before submitting, run your assignment through a reliable online plagiarism checker, for example, Editpad. It scans your content against published sources and shows you a similarity percentage. It also highlights the exact lines that match.
If the score comes back high, go and rewrite those parts yourself. Don’t just swap a few words around. Change the whole sentence structure instead.
Your Final-Day Workflow
Stop writing the night before, not the hour before. With a fresh pair of eyes — ideally after a night’s sleep — you will catch errors you were blind to while drafting. Work through the five checks in order, ticking each off before moving on. If a check throws up a big problem, fix it fully before continuing, so a later pass does not undo your work. Export to PDF last and open that final file once more to confirm nothing shifted in the export.
Build in a buffer
Leave at least an hour between “finished” and the deadline for uploads that fail, files that corrupt and portals that crash.
Printable Pre-Submission Checklist
Keep this beside you and tick each box. If you cannot tick one, do not submit yet.
| Pass | Confirm before you tick |
|---|---|
| 1. Grammar | Read aloud; spelling consistent (UK/US); no comma splices; apostrophes correct; no double spaces |
| 2. Formatting | Font, size, spacing and margins match the brief; title page complete; page numbers; consistent headings |
| 3. Figures & tables | All numbered and captioned; referred to in text; legible at 100%; sources cited; images aligned and sharp |
| 4. Citations | One style throughout; in-text matches reference list both ways; alphabetical order confirmed |
| 5. Plagiarism | Similarity report reviewed; borrowed passages cited; patch-writing rewritten; drafts saved as evidence |
| Final | Word count within limit; correct file format; exported PDF reopened; submitted with a time buffer |
Common Mistakes That Cost Marks
These recur in real submissions — and every one is preventable in the final review.
| Mistake | Quick fix |
|---|---|
| Mixing two referencing styles | Pick the brief’s style; standardise every entry against one guide |
| Uncaptioned or unnumbered figures | Add Table/Figure number, caption and an in-text reference for each |
| Over the word count | Cut padding phrases; confirm with a word counter and the brief’s rules |
| Submitting the wrong file | Name files clearly; reopen the exported PDF before upload |
| Patch-writing from a source | Rewrite in your own structure and cite; run a similarity check |
| No time buffer | Finish an hour early to absorb upload failures |
Why Order Matters
The sequence is deliberate. Fixing grammar first means you are not re-checking citations in sentences you later delete. Formatting before figures means your captions sit in a stable layout. Citations before the plagiarism scan means the similarity report reflects your finished, properly-attributed text. Running the plagiarism check last guarantees you are scanning the exact file you submit — not a draft you tinkered with afterwards. Skip the order and you redo work; follow it and each pass builds on the last.
When to Ask for a Second Pair of Eyes
Self-checking has a ceiling: you cannot fully see your own blind spots, and after hours on a document your judgement is tired. A fresh reader catches what you have stopped noticing. Swap with a coursemate, or for high-stakes work — a dissertation chapter, a graded report, a personal statement — use a professional editing and proofreading service. If you are stuck earlier in the process, homework help and assignment support can step in before the final-day rush even begins.
Related Guides
- How to avoid plagiarism and read a Turnitin report
- How to format college assignments, with examples
- The complete Harvard referencing guide
- APA 7th edition referencing guide
- How to cite ChatGPT and AI tools
- Planning a realistic dissertation timeline
Frequently Asked Questions
Final Words
Most students lose marks on small things, not on the actual research or content. A wrong citation style, a blurry image, or a missing word count check. These are easy to fix if you catch them before submission.
Go through this checklist every time before you hit submit. It takes 15 to 20 minutes at most. But it can save you from grade deductions that have nothing to do with how hard you actually worked.
Make this a habit for every assignment, not just the important ones. Over time, it becomes second nature, and you stop losing marks on things that were always within your control.
