Private vs. Public Lavatory Faucets

I am working on two elementary schools, and the lower grade levels have private restrooms intended for individual student use in each classroom. The baseline for private lavatory faucets is 2.2 gpm, so installing 0.5 gpm faucets in these areas will help us to achieve a greater water savings, as long as these faucets are actually considered private. Page. 174 of the LEED for Schools 2009 reference guide states, "restrooms in commercial establishments where the fixtures are intended for the use of a family or an indivducal are considered private or private-use facilities." However, it also says, "If the classification for public or private use is unclear, default to public-use flow rates in performing the calcualtions associated with this credit. Has anyone else encountered a similar situation and if so, how did you handle it?