What teams have improved the most in the shortest amount of time?

[AWoL]

First off, let me sincerely thank 1114 and 195 for picking us and 1405 for being awesome alliance partners at IRI. We loved working with all of you and it was an incredible experience for our team. In addition to that, it certainly felt like a milestone for our team. I've been around since 2014, when 225 wasn't quite on the level it is today, but nevertheless had pretty good results. However, last year we had seniors graduate who remembered our 2012 season, which is a night-and-day difference when compared to our performance in the last two years. I'm incredibly proud of how far we've come and I'm thankful that I've been able to contribute to 225's growing success.

As such, I love digging around the Blue Alliance team histories that show interesting changes in performance and finding out about what caused those changes. What teams do you think have improved the most in the shortest amount of time, and, if you know, what were the driving factors?