We make an effort not to assign students to teachers we happen to know are in fact not active. oxo But yes. Teachers have a slightly larger responsibility, though the group is technically called staff, not teachers. You can play staff that don't' actually teach a class.
(Oh, by the way. I just remembered that I can in fact answer General Experts for you. Don't know why I forgot. General Experts are for teachers so well versed in their profession that they can teach any subject they want, or at least a great deal of subjects. They have the choice to teach whatever they want on any given day, but NPC teachers tend to be substitutes.)
I guess it's safe to assume that anyone that plays as a teacher in this RP has to be at least reasonably active. Otherwise, the students that would be taking their classes would have a problem, wouldn't they?
If it's an already existing class? Yes. But only because teahers played by roleplayers get garaunteed priority over NPCs. Meaning you get students before any NPC teaching the same class does. They'll still be teachers and available for people to visit and learn from, but generally people won't be assigned to them.
You're free to make up your own unique classes though!~ Teachers in PTA are very trusted, and as long as they get results, they're allowed to do almost anything. (Note that 'results' here implies 'lack of serious long-term injuries'.)
Oh. It sounds like you just picked out a bunch of the player-operated classes taught by actual teacher characters instead of NPCs that anyone can control. You'd have to talk to them for more info on the class itself beyond what is implied in the name and you'd have to talk to them about taking said class because it's their character you're asking for the time of and all.
I actually created the Community Service class, which is taught by Hilda / White. (Female protagonist of BW) In that class students are taught how to effectively help society by using their pokemon in various ways. Often it involves a little excitement. A treck to find a missing student in a dangerous area of the island. However, sometimes it's just using your pokemon in helpful ways, like helping repair a building.
It's not that it's wall after wall or that it's slower than molasses. It's just that the Time of day IC moves incredibly slow compared to realtime. I usually post within the same day that it becomes my turn to post, and I wouldn't call that slow. Maybe medium, but not slow.
Slower than molasses in January, I'm guessing...? That likely means walls after walls of text in each post. Well, it doesn't bother me... much.
Well, there are some classes that I'd like to know more about, specifically, the courses "Community & Vigilante Service," "Life Skills, passion, & maintaining a healthy lifestyle," "General Experts," & "Therapy." Mind telling me more about those?
The flow? The day goes by very slowly, leaving you plenty of times to get things done on any given day. The RP is primarily character interaction based, and classes take as long as the teacher in question really wants them to, but are generally supposed to be morning things.