A child who scored well in Class 9 Maths and then struggles in Class 10 is very common. Parents often ask what changed.
Usually nothing went wrong in Class 10. The gap was already there, from Class 8 or Class 9. Class 10 is just the first year that does not let it hide.
What changes in Class 10
Class 9 maths is kind to students with a good memory. Most questions look like something they have already practised. A child who can follow a solved example and write neatly will score well, even if they never fully understood why the method works.
Class 10 stops allowing that in three places.
Quadratic equations. In Class 9, factorisation is a method you apply when the question says to. In Class 10 it hides inside word problems that never use the word “quadratic”. Your child has to recognise it themselves. A student who learned the steps without the idea has nothing to recognise it with.
Trigonometry. This is completely new. There is no Class 9 version to fall back on. The identities have to be understood, not listed, because the board paper mixes them in ways the textbook never shows.
Height and distance, and mensuration. The maths here is not difficult. The hard part is reading three lines of English and turning them into a diagram. Very few students are ever taught how to do that, so they read the question twice and leave it.
The real gap is usually older
When a Class 10 student cannot do a trigonometry sum, trigonometry is often not the problem. The problem is that they are slow and unsure with basic algebra from Class 8. Every line of working takes effort that they needed for the actual question.
So before pushing ahead with new chapters, it helps to find out what is really strong and what is not. That can mean going back to Class 8 algebra for a while.
Some parents find this slow. It is usually time well spent.
Three things you can check at home tonight
You do not need to know maths to do this. Ask your child:
- Factorise
x² + 7x + 12. Without writing anything first. - Tell me in your own words what
sin θmeans. Not the value. What it is. - Take any word problem from the textbook and just draw the diagram. Do not solve it.
Slow on the first one, the foundation needs work. If the second answer is a definition repeated from memory with no picture behind it, trigonometry marks are at risk. If they get stuck on the third, the maths is fine and the reading is the problem.
Three different problems. Three different solutions. This is why giving more worksheets so often changes nothing, because it treats all three the same way.
Where it can end up
Our students sit the same board paper as everyone else. Ankit got 99 out of 100 in maths in 2023. Ayush got 95 in 2024. Divyansh got 95 in 2026.
None of them started the year at that level. What they had was someone finding out which of the three problems above they actually had, in a batch small enough that the question could be asked at all.
If you want that for your child, the first week is free and you are welcome to sit in and watch. See what’s covered in the Class 9 & 10 batch, or just call and ask.