[maliusmaximus]

Chris I like your game. We just have to bear in mind that we are talking about a range from pre-literate grade 1, up to grade 5 students with near native-proficiency.
I guess I could try to combine the grades a little so the stronger students in higher grades help the weaker students but there are big time constraints.
Apart from the obvious issues of dealing with 400 students, there are the more vexing issues of dealing with children at vastly different stages of both English proficiency and cognitive development. That's where I'm really getting tripped up. Finding something that ticks a sufficient number of boxes for all of these students is proving really hard.