How to get more marks in board exam, How to get more marks: I scored 89.8% so I'm not really sure if I'm qualified to answer this question, but I'd still give it a try. This answer is for people who aren't exactly in the 'Genius' category (like myself), if you're one then chill, you don't need any special preparation.

1. How to get more marks in board exam
How to get more marks: I scored 89.8% so I'm not really sure if I'm qualified
to answer this question, but I'd still give it a try.
This answer is for people who aren't exactly in the 'Genius' category (like
myself), if you're one then chill, you don't need any special preparation.
You didn't mention which Board you're talking about so I'm going to
assume that it's CBSE. Also, you didn't mention which stream you belong
to so I'm going to assume that it's PCM (let's say with C++). Let's talk about
each subject separately.
Before we discuss all the different subjects I'd like to stress that NCERT
textbooks are more important than anything else. I've seen enough people
underestimating NCERT textbooks just because they went to some
coaching institute and studied some "high level stuff". They fail miserably.
How to get more marks in Physics
You must read all the chapters in detail. Make sure you practice each and
every derivation multiple times. Practice writing answers that are to the
point yet descriptive. Thoroughly studying each chapter will help you write
answers the way they're written in the book and that will automatically fetch
you full marks for the question. Numerical questions don't appear much so
there's no need to practice varieties of them. Practical is 30 marks so make
sure you do well in it. Practice writing each practical report.

2. How to get more marks in Chemistry
Again, reading each chapter in detail is important. All parts - Organic,
Inorganic, Physical and Metallurgy are equally important. When you're
aiming for >90% you don't really want to skip or underestimate anything.
Practical is important, you must memorize tests and results of Salt analysis.
How to get more marks in Mathematics
You must practice each and every question given in the NCERT textbook
including examples. Don't jump to books like RD Sharma etc. without
finishing NCERT first. NCERT is enough for board exams so instead of
practising from different books I'd recommend you to do NCERT problems
multiple times. Your practice should be enough for you to recall the solution
upon looking at any problem.
How to get more marks in Computer Science (C++ and SQL)
To perform well in CS, you MUST understand programming very well. Just
like Maths, CS is not something you can study overnight and get good
marks. You must yourself write code and understand exactly what it does.
You'll be asked to answer output of programs and for that your
understanding of the language should be good enough. Again, practical is
important. Make sure you understand every single detail of all the programs
you've covered in the class. You must be able to debug any errors you
make during the practical exam without freaking out.
How to get more marks in English
I really cannot recommend anything for language, this is the subject that
stopped me from scoring >90% (I got 82 in English). I really have no
clue, sorry.
So, that's about it, 3 months shouldn't be that bad to cover all of this. Try to
take interest in what you're studying and don't make it boring. When made
interesting, studying won't cause fatigue and you'd be able to continue it for
long hours. All the best! by Kingdom Life Academy School