A yoke is a fitted band at the top of a skirt that takes the place of a waistband. Instead of sitting up around the waist, they fit from the waist down over the hip. (Or, from where ever the skirt in question starts on the hip.) If you plan to put a gathered skirt under something snug that fits past the waist, like a fitted jacket, using a yoke will allow you to eliminate bulk under the fitted piece. Waistbands won’t do that for you.
I like yokes because they are dead simple to make from a skirt block.
What we are going to do is adjust the top of the skirt piece to fit the yoke. We could also adjust the yoke to fit back to the skirt piece. Either one is a fine solution, and you’ll find that the “right” answer is generally determined by body type. In this case, the adjustment is so small that we could have easily eased our yoke onto our skirt, and it would have been fine. I wanted my students to know how to adjust, for those times when the difference isn’t so small.
I feel like I should have more pictures here, but if I do, they’ve gone poof. Here’s a visual explanation of the differences between the two pieces:
Here is the very important part: if you are taking out of a skirt block, like the back adjustment, make sure you keep the adjustment small and above the full hip line so that you don’t remove the wearing ease.