for me most of the time classes are offered I am at work our LQS seem to cater to the retired who are available during the day during the week so I have been doing mostly online unless its a weekend seminar. I also find monthly clubs seem to be more popular and my LQS than classes. They have an embroidery club, serger club, scanncut club, applque club and they meet the same time every month. It may be the topic of what is taught, maybe the regulars are just looking for different choices. I know when I take in person classes at the quilt show I always do a totally different topic. If one topic is the only topic taught you may be pushing out people who aren't interested in that topic and limiting the amount of student by some that have already taken it not wanting that subject anymore.