Nope, I didn't get to level 3.
I've done a fair bit of the level 3 groundwork and liberty, but in terms of tasks completed I left Parelli around the middle of level 2 somewhere.
If you want my absolutely honest and strictly personal opinion...?
I studied Parelli for years, including working in the organisation for a while. For a lot of that time I thought it was the best thing since sliced bread. I irritated the hell out of people by saying "Why don't you try Parelli for that problem?" a lot
Then as I started to look around at other trainers, and also looked at what I was learning with a more questioning attitude, I started to re-evaluate what I was learning. There had always been some aspects of Parelli that made me uncomfortable because I thought they were a bit harsh or confrontational, so I kind of faffed about not doing much for about a year - hosting clinics but not taking a horse. I had also seen quite a lot of senior PNH people (including Pat) working with horses and was not sure if I wanted to become like them.
Then some instructors left Parelli and, as a result of learning with other horsemen and also because they had more flexibility, their teaching styles changed. Some of them were the trainers I aspired to be, and I needed to learn more about why. I spent a month in Australia with Steve Halfpenny and was blown away by how quickly I learnt to work with a horse at "level 3" of softness and responsiveness, skipping over the "level 1 + 2" stage altogether. I asked Steve "Why were we mucking about for all those years for when we could go straight to this?" and he said words to the effect of "I know". I have also attended clinics with Phil Rodey, Philip Nye, Mark Rashid and others, all of them very valuable and useful. In Parelli this was discouraged, as Pat once said to me "Until you've passed level 3 you ain't got the savvy to evaluate different trainers". Maybe not evaluate, but certainly I was able to learn from them.
I like that I no longer use 4 phases of pressure to teach. I like the end of the heavy metal clips on lead ropes. I love being encouraged to study as widely as possible in my horsemanship (for example I have a fantastic classical trainer helping me with ridden work). Oh yes, and I've decided, to quote Phil Rodey "This ain't playing games, this is darn serious".
So for me it was worth the study in Parelli because I learnt a lot and it opened me up to learning so much more. Why did I keep on going through the levels and tasks? Because all my friends were and I wanted to be an instructor. Would I do it again with hindsight? No, from the start I'd pursue my learning with some of the less well known horsemen whose style is more in keeping with how I want to be around horses. (Which takes much more time, imagination and effort because you don't get a complete programme of 3 levels to follow
).
As I said, that's just my personal opinion and experience, others will be completely different I know.