Public Reserved Land for Private Use

Is privately owned social facilities considered as part of the public facilities that are required to be provided for in any property development projects? For example, is the privately managed but Government accredited primary school be counted? While the need for education demand is fulfilled, the school is not opened and accessible to general public, especially if you cannot afford to pay the fees. Similarly, how about the postal service? Since postal service has been privatised and the post offices are establishing in the commercial premises, thus the question is wheather the reserve land for postal service is still required or the agency can have their own property portfolio. It is difficult now to demarcate clearly on the status of facilities or utilities. The reserve of land has to be done based on usage of facilities and not the ownership. If a piece of land has been demarcated for public use, then rightly so the land should be returned to public domain if the land is no more needed for public use. The question of utilities agencies, for example converting their land for other profitable use after discovering that the reserve land is not required any more. For example, the availability of extra land because of building a mechanical sewerage treatment plant in place of oxsidation pond which occupy bigger piece of land.