BRILLIANT IDEA!

Yes, after school classes can be a pain.
I have 4 classes/week.

But remember, this is a great opportunity for the kids to really get to know you and for the kids to have fun apart from their normal classes. Also, we are getting paid extra, so not much to complain about.

My first week was an absolute disaster. The kids' English levels are all over the place, so I didn't know how to handle it.

My number 1 recommendation is to have structure to your classes, so the kids can have something to look forward to.

My current schedule is...
1. Monday - Food and Cooking Day
2. Tuesday - Game Day
3. Wednesday - Movie Day
4. Thursday - Finish movie & conversation

I got my coteacher to explain this new schedule and to ask the kids to help my out, and it's all good now. I know it's conversation class, but I would avoid trying to teach them anything like grammar. BORING! No one checks up on your classes anyways, so do something fun. Be creative. If you can't watch movies, do an Art Day, Board Game Day, Show and Tell, etc. It's getting warm. Go outside. Do a Nature Day.

Do a Scavenger Hunt. This was a huge success during my winter camp, and I plan on doing it later. The kids used their cell phones to take pictures. I put the clues inside labeled balloons. They loved popping them! It requires prep, but it's totally worth it.

For the Food Days, yes, I pay for the materials, but the kids love it. You can do pretty cheap stuff. Or you can ask if there is a budget. I made Coke Floats this week. I even just brought in some fruit the week before and taught them the different parts of different fruits. I plan on doing puppy chow, yogurt parfaits, decorating cookies, cake in a mug, sandwiches, etc.
 

I had an after school English debate class at my boys' middle school, but it has slowly devolved into just a conversation and discussion class. The students are usually burned out after school, and to have a 90 minute debate class just seems like way too much to expect from them. It's a mix between second and third graders, but like others have posted, mine tend to segregate themselves by year. I was teaching a ton of debate vocabulary and holding impromptu debates, but the whole point of the class is to get them to talk, and many times the students seemed stressed or burnt out, so I switched to a more relaxed conversation/discussion format.

I have used a ton of ideas from here and from just typing in "teaching esl debate" into google. I have done a lot of speaking games (ex: giving them a picture of a random tool, then having them argue which is more important on the spot), given them worksheets with conversation starters (such as pictures of robots, tattoos, etc.), and showed them movies where I had them then discuss an aspect of it and what their opinion was (I've noticed usually if one student gives their opinion, others will speak up and voice theirs). This switch to a more conversation/discussion based format has been more popular, and the students seem more prepared to speak and give their own ideas. It's still difficult at times (I don't have a co-teacher, so try to get 10 fifteen year-old boys to only speak English for 90 minutes), but overall hasn't been too bad.

Hope sharing my experience might help some people trying to prepare for a similar situation. If not, just don't read it then.

I made some Korean themed talking dominoes. They might be good to wrap up the end of a lesson  ;)

I have recently started to teach an after school class and some of students understand the work the first time but just pretend like they don't, which really frustrate me. I am hopefully optimistic that it will get better  ;)

It sounds great, so try again later please!