Hey Vicky,
After the unlock 4.0, According to government, school is going to reopen on 21 September. Class 9th, 10th, 11th, 12th are going to reopen from September.
Union Health Ministry has released an SOP (standard operating procedure) for reopening of schools.
For further references you click on the link below :-
https://news.careers360.com/school-reopening-news-know-when-will-school-reopen-in-india#:~:text=School%20Reopening%20News%20in%20Delhi&text=Schools%20will%20remain%20closed%20till,from%20their%20teachers%20in%20person.
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