Not sure of the context of your question exactly, but a quick summary for non-alums: MIT has had a dorm system for many decades where students choose where they are going to live. This tends to aggregate similar personalities/lifestyles into various dormitories. Senior House was a dorm with a reputation: It tended to attract a personality that might be described as "edgy", and was perceived as a place with higher-than-avg drug use. It has had that reputation for decades.
The current MIT chancellor looked at GPAs and other metrics and decided that Senior House was under performing and perhaps harmful to students. She put the dorm into "turnaround", and when that didn't pan out, she evicted all of the undergrad students. It is now a grad dorm.
[That last paragraph reads like a corporate action, a similarity that has been noted by others.]
Many alums have noted the administration has been trying to disperse Senior House for decades (I saw it in the 90s), it looks like Chancellor Barnhart was the executor.