Good choice!
My Performance Training YMCA Lev2 and Lev3 courses, unfortunately, took place during the Covid-19 pandemic. At the beginning, back in February 2020, everything was still fairly normal and we had the opportunity to follow the theory in class and the practical at the gym. Our teachers, Aaron and Lee, were absolutely clear in explaining (and re-explaining, if required) concepts and show the correct technique to execute properly and safely every exercise. They were always on time and available to accommodate our needs (if any).
Once the pandemic started striking us with all its power I was worried the quality of teaching and learning would have drastically dropped and everything would have been postponed. Regardless my concern, Aaron and Lee showed great flexibility and Aaron was able to arrange everything at the best and keep the teaching and the exams on track.
Regarding the teaching material, Aaron has got his PowerPoint presentations which are a quite good overview of the key points. He uses to add a lot of information on top of them. However, books are also available and delivered at the beginning of each course. Content is well-explained with clear figures and examples and it is fairly up-to-date (2016).
Very probably Performance Training, once the pandemic will be over, will not need to re-arrange anything as done for my Lev2 and Lev3 courses anymore. This is to say that, regardless all the crazy time in 2020, 5-star rating is still what Performance Training is worth. I cannot imagine what it would have been able to achieve without the pandemic... maybe 6 stars?!