My school recognizes bowling as a varsity sport, and in fact almost every high school around here has a varsity and JV bowling team.
Mine did as well. In fact, in our section (Section IV - Southern Tier), we had about 20 schools with bowling teams in two different conferences; STAC (Southern Tier Athletic Association) had 11 teams who fielded Varsity and JV boys and girls teams and the Susquenango association had 9 teams - all from small schools who at least had enough bowlers to field a Varsity boys and girls team. New York will always have a state-wide school bowling program.
As for North Carolina and Georgia (where I live now and where I used to live), high school bowling will probably be a local club deal
. Maybe, if bowling "infiltrates" the youth better, I can foresee North Carolina becoming a Varsity sport state. All Georgia has, really, is Atlanta, Savannah, Augusta, and Macon/Warner-Robbins as far as decent-sized areas. NW Georgia has a decent bowling following, too, but the state is otherwise too sparsely populated to make it a Varsity sport, I'm afraid.