Should I become a Wilton Method Instructor for Michaels?

I am not sure about any of what you are asking  but I would think that the students would have to buy their own supplies. You should not be responsible for buying their supplies but rather teaching them.

Also, I have seen Wilton classes at Micheal's but they are all scheduled for night time because most people work in the day time. I am sure someone here will have answers to your questions. Good luck. Sorry that I could not be of much help.

Yes, most Wilton classes are at night like the PP said.  You could always ask your Michaels about holding them during the day though - might be a smaller crowd. 

When I was a WMI, I got paid for the number of people that showed up on the first night of class.  So say if 7 people signed up for the class and only 6 showed up the first night and 4 showed up for the remaining weeks, I got paid for 6 people.

You are responsible for your teaching supplies.  That means bringing a cake and icing and everything you need to ice and smooth cake and bags and tips, electric hand mixer, etc.  The students supply their own things.

I taught 2 classes a week and generally made around $100 a paycheck.  Honestly I quit because $200 a month wasn't worth the time and money I put in preparing and driving there and back. 

Many people do it and love it and make extra spending money.  I liked it, but for me it wasn't worth being away from my family 2 nights a week.  Oh, plus we did in-store demonstrations like one Saturday a month. 

I had aywhere from 1 - 8 students.  Honestly, the bigger the class, the easier it is.  When I had that class with 1 student, she darn near drove me nuts.  When you have a larger class, they don't expect you to sit right next to them and explain everything in agonizing detail.  Anyway... 

Oh, the Wilton tutorials are helpful, but very boring!  They are videos of people teaching the class.

I was a WMI for Michael's, and the store supplied us with the supplies we needed to teach the class. They had  all we needed in the classroom closet. And if when we needed icing and fondant we would just go get it off the shelf if it wasnt already in the classroom, and then write down what we had to get and turned it in with the student count. Only had to bring in a cake for course one. We did use our own decorating tips and tools though. I didn't do it for long, I just did it until I found a full time job.

As a current Wilton student at Michaels, I buy all my own supplies. The store I go to gives us our course book at no extra charge (after we pay the tuition and buy the kit) on the first night of each course. In addition to the kit, we supply any needed baked goods, which have been cookies, cupcakes, and cakes. I've also bought several extra tools and other notions, some were very much needed and others were listed as 'optional' equipment but that the instructor either told us we'd really need (like duplicate tips for nights we'd be changing icing colors back and forth) to some things that she said would just make life easier (like the cake dividing mat) when doing different things but weren't crucial to get through class.

For course 1, my instructor brought in an iced cake the first night of class and did a quick simple decoration on it to show us what we'll be learning. After that, I don't recall her bringing in anything else. She has mostly used other students' materials to demonstrate. Sometimes she'd keep grabbing materials from the same person, other times she would use from someone else. I'm now on the 3rd course, and she hasn't brought in anything since that I can recall since the cake. So it sounds like materials cost is almost nothing for the instructors.

Congratulations on being chosen, and good luck if you choose to do it!

ETA: the classes at my store seem to be all at night, and the occasional weekend demonstration.