I daresay that what the video shows isn't an isolated incident and neither will it be confined to Scotland, it's just that this particular visit was captured on film.
I have to ask - Why? Can the children not learn something about Islam without visiting a mosque for lessons or being taught "correct positions and basic etiquettes"? When did they last visit a Stupa, a Temple, a Cathedral, a Meeting House or just a plain old-fashioned Church? Are they ever given religious lessons by a Rinpoche, a Guru or a Preacher? Why is it appropriate to indoctrinate via religious garb, worksheets and 'goody bags'?
For the record, it is a state school and I think it's time religion was left outside the school-gates. You might think I'm being picky but this sort of thing makes me feel as uneasy as those videos coming from the US where school-children sing songs of praise to Obama.
H/t: Vlad Tepes