I would think it would depend on the school. If the player goes to a big state school like USC or Alabama where it is easier to get in academically, then grades outside of meeting the NCAA requirements probabably are not a factor. If the player is looking at a school which is academically selective or smaller, Duke, Wake Forrest, Furman for example, it probably matters a little more. I believe all schools have verbal offers contingent on applying to the school and being accepted by admissions. One selective school coach said they have had given verbal offers to players who then did not get accepted into the school when they went through the admissions process. Upon which the athletic scholarship was null and void. Like everything there is probably no definitive answer. I would say grades matter but how much depends on the academically selectivity and size of the school. As evidence of Furman beating Clemson, the larger state school does not always have the higher level of soccer players.