Actually, my son played in this league's "Bridge League" last year for graduating HS Seniors going on to play college ball. This league is not the above mentioned ABCL, but the ABCCL -
www.abccl.com The college level league tends to be mostly local players, JC, D2 and D3 level, with a few D1 players mixed in (although it does get a limited number of players from a distance). Good baseball played on average fields (some HS fields and public parks), in the area of the New Jersey shore. Only 4 games per week, 2 mid-week and one Sunday doubleheader. The woman the runs the league is dedicated and knows her stuff. Inexpensive player fee, but I would say your son will probably need his own transportation to the games.
Check out the league website. The new rosters are not yet posted, but you can check out previous years.