From what i saw in my time, the college players would get the edge. From the time the colleges league was formed in 62, their players were in the limelight, so they got first preference. I was pretty obvious. The media light was on them. But there were guys who did not play intercol or who went to other secondary or private schools who made the national team. I have some names, allyuh could correct me if I am wrong. Buggy Haynes, Selwyn Murren, Steve Khan, Henry Denny, Selris Figaro, Bert Grell, Ulric Boxhill, Lincoln Delandro, Sharkey Henry, Winston "Bee" Philips, Charlie Spooner, Max Mascal, Ear Carter(He went St. Bedes up St.John Rd and Progressive), Kendal Walkes(Progressive). There are some I can't remember. I can't remember those mentioned above playing intercol. But when the league started to expand, I think that there was an emphasis to look at players away from the CFL founders. But there appeared to be bias against Rodriguez, Skeene, Rocke and some other players from the "tranditional college schools". Even my cousin, who was a teacher in Mucurapo, said that Graham should be called up for the national team.
Now the league is back to the traditional national division structure, rather than the zone structure. The zone had "water down" the league. The talent was spread. Interest was falling. So they readjusted. But with this so called pro-league, the U-19 football is in a state of flux. Their desire to restrict school influence would not help their product. Even if they had restrict the "super stars", inter-col would go one. And the clubs will continue to "raid" the school for players. The clubs have to form their own schools to pull the players away. They don't have the resources to do that.