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Candidates must have passed their qualifying examination (Class 12) with at least 45% aggregate marks. SC and ST candidates are required to secure at least 40% or equivalent grade.
the 10+2 marksheet isn't necessary that much . You just have to clear the CLAT and based on your CLAT marks the colleges will take you in . You just need to keep your 12th marks above 60-75% depending on the college's requirements.
To prepare for CLAT in Class 12th, candidates will need a lot of time, so starting early is always recommended. In fact, candidates should focus on completing 90% of CLAT preparation at least one month before the board exam so if you are thinking to give CLAT then start preparing drom today.
for more information regarding CLAT please visit the given below link
hope this is helpful for you
all the best