Hello vanishka
Indian institute of technology(IIT) which are TOP institute in india for pursuing engineering i.e B.E/B.Tech. Since this institutes are most reputed institutes of India taking admission into this institute is very difficult but not impossible. To get into IITs you need to give two tiers Entrance exams
1. JEE Mians
2, JEE ADVANCED
Jee mains is just like a preliminary exam where if you qualify it then you can write JEE ADVANCED which will get you into IIT. Since you are in School therefore you after your 10th you need take science (10+2) and after that giving the entrance exam you can get into IIt.
you need to work hard for it since the candidates competing for this institute are very high around 10,00,000 which is avery huge no and coming in top 1000s should be your aAIm to get best of the best IITs
for more detailed information you can refer this link
https://engineering.careers360.com/exams/jee-advanced
BEST OF LUCK FOR IIT!!
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