In general, most schools do not have lead service lines. The source of lead in schools tends to be from brass, because until 2014 even lead-free brass had 8% lead. It's often a tin-lead solder combination from pre-1990 construction, but we've also seen an increase in lead concentrations in newly constructed schools. In general, any metal that's exposed to water for the first time will have a higher tendency to leach if the water is aggressive. Again, the importance of corrosion control is fundamental, particularly when it comes to schools and larger institutions.
