Law schools care about their rankings, which are largely affected by the numbers, more than students do. They absolutely care more about a 175 than a 170.
I've tried to find them online and while I an confirm that Duke is in the top 10 and Michigan is not, I can't find the rest of the info for the official USNWR ranks :/
I'm curious to know that myself @ddakjiking . I'm really surprised by Duke getting in the top 10, though next year they'll probably be 11 again. Besides Michigan and Duke, I'd say the rankings look pretty standard.
There are separate rankings of part time programs so ... correlation between PT and FT rankings as you can see here ... -law-schools/part-time-law-rankings