I think the poster was asking about club programs and high schools... I don't have specific numbers or know if these are completely accurate, but here are a few...
Hawks - St. Mary's, Spalding, Severn Club Blue/DC Dawgs - Matre Dei Bethesda/DC Express - Landon/Bullis Crabs - Boys Latin / Loyola / Gilman / McDonogh FCA - Calvert Hall
Spot on , look at location of clubs and it makes sense.. tho most teams have multiple schools represented.