Dooer,
A current sophomore can transfer mid-year to a JC, play baseball this spring, and enter a D1 next fall, and play baseball spring 2010 if:
He gets a 2.0 GPA and 12 hours of transferable credit for the spring semester at the JC, and graduates from the JC(14.5.6). (Article numbers refer to the
NCAA D1 Manual.
A calendar year has to elapse from the date he left the original D1 until he is eligible to compete at the new D1(14.5.6.3), so if the new D1 has games scheduled in the fall, he can't play in those games. You generally only see fall games at cold weather schools. He will be able to practice in the fall.
If he doesn't graduate or have adequate academic progress, then he will have to be in residence at the new school for 1 year before he would be eligible to compete. The residence clock starts when he begins at the new school, and is not related to the time he spent away from D1 baseball.
So in principle this is doable, but it may be tricky to manage to graduate from the JC, while only attending classes there for 1 semester. You'd want to look into whether his existing credits transfer to the JC, and if the JC has any residence requirement to graduate.
Don't forget that he needs to meet the NJCAA entrance requirements--basically have completed 12 hours this fall semester (or 36 hours total) with a 2.0 GPA at his present school (10.C and 4.E). There are also other ways to qualify for NJCAA competition, but realistically if he has the courses to graduate from the JC this spring, he'll be athletically eligible.
NJCAA Eligibility Pamphlet Edited 12/07/08 to add that since Dooer son is considering a California JC, he is subject to the California Community College Athletic Association rules rather than the NJCAA rules. The effect is nearly the same--a player transferring from a 4 year school needs a cumulative 2.0GPA, and for a player who has already competed for a season, 24 hours of course work since the beginning of the first season.
CollegeParent provided the link below, but here it is:
CCCOA Eligibility Bylaw