A group of parents who have filed a $7.7 million lawsuit against the Maryland Public Secondary Schools Athletic Association for its policy regarding private school teams that use home-schooled athletes contends that the state's proposed remedy is unfair, their lawyer said yesterday.

Carlos Sandoval, who represents nine parents of home-schooled wrestlers he coaches at Progressive Christian School in Temple Hills, responded to the state's attorney office's proposed guidelines to allow teams with home-schooled athletes to play MPSSAA teams and its request last month to have the case dismissed.

Sandoval filed his response -- and a request for a trial date and a preliminary injunction that would last through the trial -- to U.S District Court Judge J. Frederick Motz.

Sandoval said the MPSSAA's proposed eligibility guidelines, which would require private schools to abide by the same rules as public schools, are prejudicial against his school. He objected to a portion of the proposal which would allow MPSSAA teams to play teams from out of state that use home-schooled athletes if those teams have authorization from their state's athletic governing body.

"Their standards of competition are not really standards of competitions," Sandoval said, "because in practice, they exempt every high school in the U.S." outside of Maryland.

The MPSSAA currently does not allow member schools to compete against teams that use home-schooled athletes.

The state's proposal plan will be discussed at the State Board of Education meeting on July 19, according to Ned Sparks, the MPSSAA's executive director. "We stand by our original proposal," Sparks said. . . .

Chantilly football coach Marty Riddle resigned Monday -- one month before the start of practice -- over philosophical differences with administrators, he said yesterday.

The Chargers went 0-10 under Riddle last year, his first at Chantilly. He will continue to teach physical education at Chantilly and will work in an assistant coaching position at Robinson, he said.

"The bottom line is I love coaching, and there's some great kids and great parents at Chantilly," Riddle said. "But there are some people there who won't let coaches coach."

Chantilly's acting athletic director, Tod Chappell, confirmed Riddle's resignation, saying, "Marty struggled here, but he is a credible coach and works very hard."

-- Jon Gallo and Tarik El-Bashir