1) Give us links to your channels or write them out (such as "youtube (dot) com (slash) channel number") so we can check them out.
2) Move ALL of your YouTube work to the weekend. Give it a day (Saturday or more likely Sunday) to crank out all the episodes needed for the upcoming week. If you are monetized, put your scheduler to work automatically releasing them during the week so you don't even have to think about it.
3) Always keep a notepad on you (in your backpack, back pocket, purse [if you're a gal], etc.) and during the week, write down ideas for episodes as they hit you during the week. Don't do the mistake of thinking, "Oh, that's a good one. I'll have to remember that for the weekend." No, don't trust your untrustworthy memory. Write it down. Keep that notepad next to your bed so when you wake up at night with an idea for an episode, you can immediately write it down ... which, by the way, will rest assure your mind that you'll remember it and thus you'll go to sleep faster because of doing so. When the weekend day of production comes, take out that notepad and select the best ideas you came up that week for what you produce on that day.
4) At your school, start a YouTuber Club. Talk to your teachers about creating it. Get a teacher to be its sponsor. Ideally a teacher who knows how to work a camera, lighting, etc. Your best bet is your art teacher! Ask the teacher if those who make videos for the club can get extra credit from their teachers (or at least the art teacher) and ask the teacher to pitch this to the principal. Getting extra credit will pull in some kids. The key to the club is the teacher that runs it. Find a teacher who is excited about doing it. The teacher can then invite local video production companies and TV stations to come and speak to your group. Don't just invite news anchors and radio talk show hosts, but separately invite camera operators, sound technicians, producers, editors, etc. They have a HUGE wealth of knowledge that your club can mine.
Be inclusive. The club must be open to all grades in your school and all students are welcome. Don't let it become a clique. Meet weekly. Every meeting, show all the videos that all the members did over the last week. Applaud and comment. Encourage. Help each other. Collaborate with each other. Appear in each other's videos. Do skits. Have a group discussion video. Make cookies together. Brainstorm, brainstorm, brainstorm. But most importantly of all, have fun.
Once your club gets large enough, it should be able to get its own room at your school. That is a milestone that everyone in your club should do a video for their channels about. Then put up a big poster on the best spot on the best wall that keeps track of how many subscribers each channel has. Update the poster every week during the weekly meeting. The larger the club becomes and the more subscribers your channels get, the more the school will support. Your school might even get it a computer with video editing software on it.
The beauty of this last point is that you are then able to combine both school and YouTube together.
