Saw this in reverse order. I answered some of your questions in reply to apm.

For a child who needs frequent reminders/re-direction, I would be looking for settings where performance is better (off-task behaviors are fewer) and worse, and analyzing for patterns, for example, in terms of task-type, group structure, seating, outside distractions, time of day, staff-child and peer-child interactions. Also, the frequency with which cueing is needed in various settings, and what kinds of cues are most effective.

...pronounced like the long vowel and first letter of the alphabet...