Every lure in my boat is a "confidence bait" (or at least was at one time, i.e. the time of purchase) Anyway, I'd tell the students to be aware of the seasonal patterns and them make their best, most educated guess at the time. Some days a bait does seem like a "magic bait" , but in my case I like to think that it was the reasoning process that got me to that bait which was more important.
Now, having said that, when I don't know what to throw, my default choice is some sort of jig worm. My current favorite is a 1/4 oz Brewer Slider head and a 5" Paddle Tail worm. BPS makes a paddle tail version of the Stick-o and that is my current favorite. Zoom paddle tail worms are a fall back choice. For rookies, I'd recommend that they throw this bait on spinning gear using 10 to 20 lb braid and a short fluorocarbon leader. Retrieve is dirt simple - polish the rocks or whatever bottom is there by making intermittent bottom contact. If you are on the bottom all the time, you are going too slow. If you never tough the bottom you are going too fast.
Get a copy of Charlie Brewer's book ON SLIDER FISHING and have all your club members read it. I don't know what kind of reference library you have, but you might want to start one. I have most of the in-fisherman magazines every published ( the older ones, when it was owned by the Lindners, have much more info than the more recent ones, but recent ones are ok) The old BASS FISHING INSTITUTE which was active from 1980 to 88 or so, published an excellent text book, which covered all the basics of bass fishing in extreme detail. There are lots more books you might want to collect as well, in addition to the plethora of advice you might find on-line.
Next, if you're looking for winter projects, you might teach them how to pour lead and/or soft plastic baits. Allegedly, the GUIDO BUG, an outstanding craw fish imitation, was invented by his son Dion as a grade school project. If you need funding - you're on your own - I don't have a lot of ideas on how to fund a high school fishing team, my guess might be that there are some fisherman in your area that might want to help. My guess would be that the ones who have the most time to help wouldn't be the ones with the most funds to help.
My next question would be, why stop at a bass team? Why not a fishing team - go multi species. Catch some crappie - catch some carp - catch what ever is biting. What is your inventory? How many Dads/ grand dads/ Uncles, etc, have boats? What are the fishing opportunities available? Close or within reasonable driving distance? Thanks for letting me rant. If yo think about it, club growth is really a marketing issue. If you think about it in that context, there are many avenues for growth.