I don't know about other parts of the country, but from what I've seen here in SoCal, the relative role of HS sports versus club sports participation in getting college exposure varies widely by sport. For baseball, both HS and club give a lot of exposure ... if you're standout baseball player and playing in both these venues, you'll very likely get noticed. For football, it's predominantly the HS exposure that matters. For s-o-c-c-e-r, club exposure seems to be much, much more important and whether the club futbol team is moving up through the progression of bronze, silver, gold, and premier brackets each year or two so by the time a s-o-c-c-e-r player is a soph or junior, they're playing on a gold or premier level team. Club s-o-c-c-e-r is structured to have this natural 'funnel' effect as teams either advance to each successive level, or the better players move onto other teams that recruit them to the next level. The college coaches then can predominantly canvas the gold and premier level teams for the top players.