I've been riding over 15 years but took my first faltering steps onto a track this May with the Ron Haslam Premier course (CBR600RR, two students to one instructor) and found it both enormous fun and really instructive. Learned a heck of a lot about body and bike position and had such a blast I gritted my teeth and chucked in for an Elite course which I did last Wednesday (23rd July 08).
On a 'Blade with Owen Cherrell (ex-racer and owner of a bike shop in Lincolnshire) as my instructor I started the day a tad apprehensive but with very friendly and constructive instruction I ended the fourth session by posting a 1min 56sec lap and the datalogging sheet showed that if I could have combined my best times across the 8 sectors into one lap it would have been 1min 53 (and a half!).
Whilst laptime-chasing wasn't at all my aim, it showed the progression made through the day with roughly 5 secs being shaved off from session to session. The increase in pace is very progressive and I barely noticed that we were going faster which I feel is testament to the quality of the instruction.
Although it IS pricey at £359 I felt that the combined effect of this track, using the school's bike and the superb instruction made it all worthwhile. I'm now far more confident about taking my own GSX-R750 onto a track and am about to book up for another Donington trackday next month using my own bike.
If you have the money to spare, I can't think of a more beneficial and utterly enjoyable way to spend it. Top marks to the school.