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It could be construed as such, though it might be difficult to argue the case. However, even if you need fewer apprentices, you are reducing greatly your catchment population. Therefore I suggest that you still cover all four schools, even if the visits are shorter. Consider, for example, inviting the careers adviser of each school to your site and give them a full briefing so that they are inspired to send appropriate youngsters to you. But apprentices are vital for the future of any engineering business, so I really would urge you not to cut back on your recruitment activity.