At some points in time it might be feasible to treat the class as a group, and at other times, according to what is being delivered, it might be necessary to give the small groups that kind of attention that would help them to grow. so I think what is important is the understand your class as a whole, pay some attention to these individuals very early in the period that you have them so that you have a sense of how the individuals need to be treated as small groups sometimes, in larger groups, maybe in pairs, however, but the individual teacher needs to address that. 