Top 25 English Grammar Mistakes Students Make in School Exams (And How to Avoid Them)
- LIB
- 2 days ago
- 4 min read
English grammar plays a major role in school examinations, competitive tests, spoken communication, and overall academic performance. Yet, many students lose marks not because they lack knowledge, but because of small grammar mistakes that can easily be avoided with proper guidance and practice.
At LIB Education, we regularly help students identify and correct common grammar errors through personalized English tuition and Spoken English training. This blog highlights the most common English grammar mistakes students make in school exams and practical ways to avoid them.
Why Grammar Matters in Exams
Good grammar helps students:
Write clear and accurate answers
Improve sentence structure
Increase confidence in writing and speaking
Score higher in English examinations
Create better impressions in interviews and presentations
Even brilliant students often lose marks because of avoidable grammatical errors.
Top 25 English Grammar Mistakes Students Make
1. Incorrect Subject-Verb Agreement
Wrong:
She go to school every day.
Correct:
She goes to school every day.
Tip:
Singular subjects usually take singular verbs.
2. Confusing “Their,” “There,” and “They’re”
Wrong:
Their going to the library.
Correct:
They’re going to the library.
Tip:
Their = possession
There = place
They’re = they are
3. Misuse of Tenses
Wrong:
I have completed my homework yesterday.
Correct:
I completed my homework yesterday.
Tip:
Do not mix present perfect tense with past time words like yesterday.
4. Missing Articles (A, An, The)
Wrong:
He is best student in class.
Correct:
He is the best student in the class.
5. Incorrect Prepositions
Wrong:
She discussed about the problem.
Correct:
She discussed the problem.
6. Sentence Fragments
Wrong:
Because I was tired.
Correct:
I went to bed early because I was tired.
7. Run-On Sentences
Wrong:
I studied all night I was very tired.
Correct:
I studied all night, so I was very tired.
8. Misplaced Apostrophes
Wrong:
The boys bag is missing.
Correct:
The boy’s bag is missing.
9. Confusing “Your” and “You’re”
Wrong:
Your very intelligent.
Correct:
You’re very intelligent.
10. Double Negatives
Wrong:
I don’t know nothing.
Correct:
I don’t know anything.
11. Incorrect Use of Capital Letters
Wrong:
i live in bangalore.
Correct:
I live in Bangalore.
12. Using Informal Language in Exams
Wrong:
The movie was kinda good.
Correct:
The movie was quite good.
13. Punctuation Errors
Wrong:
Lets eat Grandma.
Correct:
Let’s eat, Grandma.
Punctuation can completely change meaning.
14. Confusing “Its” and “It’s”
Wrong:
Its a beautiful day.
Correct:
It’s a beautiful day.
15. Incorrect Pronoun Usage
Wrong:
Me and Rahul went to school.
Correct:
Rahul and I went to school.
16. Repetition of Words
Wrong:
The student repeated again.
Correct:
The student repeated.
17. Incorrect Comparative Forms
Wrong:
She is more taller than me.
Correct:
She is taller than me.
18. Wrong Word Order
Wrong:
Always I complete my homework.
Correct:
I always complete my homework.
19. Confusing “Then” and “Than”
Wrong:
She is smarter then me.
Correct:
She is smarter than me.
20. Using “Very” Too Often
Weak:
The story was very very interesting.
Better:
The story was fascinating.
21. Incorrect Plural Forms
Wrong:
Informations are useful.
Correct:
Information is useful.
22. Mixing Active and Passive Voice Incorrectly
Wrong:
The work completed by him.
Correct:
The work was completed by him.
23. Incorrect Direct and Indirect Speech
Wrong:
He said that he is tired.
Correct:
He said that he was tired.
24. Overuse of Short Forms
Wrong:
Can’t, won’t, isn’t (in formal essays)
Better:
Cannot, will not, is not
Formal writing requires proper structure.
25. Poor Sentence Formation
Wrong:
My best friend because he helps me.
Correct:
My best friend is helpful because he supports me.
How Students Can Improve English Grammar
1. Read English Daily
Reading newspapers, books, and articles improves grammar naturally.
2. Practice Writing Regularly
Daily writing improves sentence construction and vocabulary.
3. Revise Grammar Rules Weekly
Consistent revision builds long-term accuracy.
4. Learn From Mistakes
Maintain a grammar correction notebook.
5. Take Professional Guidance
Expert teachers can identify hidden weaknesses quickly.
How LIB Education Helps Students Improve English Grammar
At LIB Education, students receive:
Personalized English grammar training
School syllabus-oriented coaching
Spoken English improvement sessions
Writing and comprehension practice
Exam-oriented preparation
Online and offline English tuition classes
Our experienced teachers focus on both conceptual clarity and practical application, helping students improve confidence and score better marks in examinations.
Frequently Asked Questions (FAQ)
Q: Which grammar mistakes are most common in school exams?
A: Tense errors, subject-verb agreement mistakes, punctuation issues, and incorrect article usage are among the most common.
Q: How can students improve English grammar quickly?
A: Regular reading, writing practice, grammar exercises, and proper guidance can significantly improve grammar skills.
Q: Does grammar affect marks in board exams?
A: Yes. Grammar affects writing quality, comprehension, essays, letters, and overall presentation in English examinations.
Q: Are Spoken English and grammar connected?
A: Yes. Strong grammar improves sentence formation, fluency, and confidence in spoken English.
Q: Does LIB Education offer English grammar coaching?
Yes. LIB Education offers both online and offline English tuition and Spoken English classes for school students and adult learners.
Conclusion
Grammar is not just about rules — it is the foundation of effective communication and academic success. Avoiding common grammar mistakes can help students write better answers, improve confidence, and score higher marks in school exams.
With proper practice, guidance, and consistent learning, every student can strengthen their English grammar skills and become a more confident communicator.
Improve Your English with LIB Education
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Whether you want to improve:
School English
Grammar
Writing skills
Spoken English
Exam performance
LIB Education offers expert guidance through experienced teachers and personalized learning support.
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Disclaimer
This blog is intended for educational and informational purposes only. Grammar rules may vary depending on academic boards, writing styles, and contexts. Students are encouraged to consult their school syllabus and teachers for examination-specific guidance.
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