I attended the Fiesta ST Octane Academy as a new owner (free one day course for proven owners of the Fiesta ST or Focus ST) when it was running, (now replaced with the RS program).  I added a second day in the Mustang GT cars (not free).  For Canadians, the add-on day is pricey, but holy cow, it is worth it! 

Two tracks, lots of track time in the Mustangs, lots of teaching and if you can snag an instructor they will be your co-pilot and give very specific track-driving tips. All levels welcome (I had never track driven before) and all drivers will improve track skills even after two days. Speeds can reach well over 100 mph on the straightaways. 

ST Octane program also included an afternoon reception at Ken Block's secret HQ workshop outside of Park City, Utah, the day before the course. Not sure if that is part of the new RS program.

One or two day program in the Mustang GT or the 302Boss cars (for even more money and with prior track experience) is still money well spent.