The Old Country Store, located in Intercourse, PA is about a 20 minute car ride from Lancaster, PA. Here is a link to their class schedule.
I've not taken any classes there myself but have shopped there often. Their fabric is first quality and the staff is always very pleasant and extremely helpful either in person or on the phone. There are also other fabric shops nearby as well as other shopping.
https://theoldcountrystore.com/events/upcoming
Hope this helps and have a wonderful trip! Sounds exciting.