New and returning Coders in the same class

I run an after school coding club. We started last year using the Express Course. Some made it to lesson 15 or higher. Those same students want to be in the club again, but I’ll also have students who are new to the club. How do you recommend I proceed? Start everyone over?

Thanks in advance!

I would create two separate classes on - one for beginners and one for the returning students. Then you can have them easily at different spots and not overwhelm the beginners with all the lessons at once. I like to keep everything hidden and then slowly make them visible to the students. If you do the unplugged lessons, I would have everyone do them because the returning students may learn something new the second time around.