From the voice of experience of teaching Girl Scouts to quilt.
1. Teach sewing machine safety first
2. Have each girl supply her own machine with manual... and/or a parent to assist in operation of machine.
3. Teach basics of sewing first and formost.
I started my troop (five girls ages 9 - 14) with quilts for kids... basic 4 patch pattern... only 2 completed the tops... I and my assistant leader completed the rest of the quilts...
Problems.
1. Because these weren't free for the girls to keep ... they couldn't take them home... glad because several of the girls didn't continue after only 2 weeks.
2. One of the girls, didn't listen and follow rules etc...
3. I am still trying to finish these quilts because the girls are not to the level of quilting...
This past spring, I tried a simple D9P and the girls (new group of girls) still had problems just sewing the 9 squares together...even though this group had sewing experience.
4. Sewing with troop of girls takes more time then sewing with one or two....They don't get much done... seriously even when they are diligently working... you have to explain every step at a time..