https://www.timeshighereducation.com/world-university-rankings/2018/subject-ranking/law#!/page/0/length/25/sort_by/rank/sort_order/asc/cols/stats

I doubt this ranking has much value. Who would consider Duke to be the best law school in the world just because it scores well on the criteira they use?

Here is the methodology:

https://www.timeshighereducation.com/world-university-rankings/methodology-world-university-rankings-2018

The weightings for the Law ranking are:
Teaching: the learning environment
32.7 per cent
Research: volume, income and reputation
30.8 per cent
Citations: research influence
25 per cent
International outlook: staff, students and research
9 per cent
Industry income: innovation
2.5 per cent

Amazing. Not a single university in France. Useless.