Admission to law school in India and abroad for an Undergraduate degree requires successful completion of Grade 12 with a minimum 45% from any recognized Board in India. You can apply to the independent law schools or private ones for which you will have to appear for the CLAT examination. If you want to apply to law schools in the States, Canada, and a few other countries, you will have to sit for the LSAT exams. Some colleges in India also accept LSAT score. Check the individual college's website for more information. You can also find information here:

https://law.careers360.com/articles/clat-official-website

https://law.careers360.com/articles/lsat-india

http://www.pearsonvueindia.com/lsatindia