Hello,
Yes usually the satte for study during 11th 12th standards is also considered quivalent to domicile.
ANd no domicile certificates are needed to be produced for the same.

so yes you are eligible for 85% west bengal quota if you have passed senior secondary from west bengal kvs.

However as you know that cutoff changes every year depending on various factors like difficulty level of the exam questions , number of candidates appearing and the recent COVID19 crisis etc.

You can use careers360 college predictor to know the colleges you can get at your NEET score;- https://medicine.careers360.com/neet-college-predictor?icn=QnA&ici=qna_answer

Hope this helps

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