In order for you to appear for the Common Law Admission Test, you would have to clear the eligibility criteria of the exam. One of the points in the eligibility criteria states that a candidate should have passed in 10+2 or an equivalent exam from a recognized board and general category students should have secured 45% in the qualifying exam while for SC and ST candidates, 40% in qualifying exam is necessary.
As long as you clear this and also the other eligibility criteria, it isn't any problem. Clat NLU results or merits are decided only on the basis of your CLAT Scores and your board marks would not have a say in it. However, it is advised to not take boards lightly as poor academic records would surely affect you in the longer run.
For more information about CLAT2020 and the eligibility criteria, refer this link https://law.careers360.com/exams/clat
Hope this helps.
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