I am surprised to see Michigan State as a T4. It is probably the most well-known of the T4s. They have a solid graduate business school, and they are attached to a Big10 undergraduate.
Anyone know why they are T4? Lack of funding? Lack of drive from faculty? Shoddy administration? I have just been curious about this as all other Big10 law schools are T1/T2, with 3 of the schools T25.