A state court judge in Florida will soon issue a ruling that will either validate or refute parents’ right to opt their child out of state testing. The specific issue is the high-stakes third grade reading test; if students don’t pass it, they may be held back, even if their teacher says they are proficient readers.

A state judge is weighing a decision that could shake Florida’s education-accountability system following a marathon hearing Monday in Tallahassee.

After nearly nine hours of testimony and arguments, Leon County Circuit Judge Karen Gievers wrapped up a hearing on state and local policies for allowing students to move to the fourth grade but did not rule on a request that would allow about a dozen students across Florida to advance.

The practical effect of Gievers’ decision, and the appeals that are almost certain to follow, could either validate or shatter the “opt out” movement led by parents who say a state standardized test should not decide whether their children are allowed to move from third grade to fourth grade.

The parents of the students involved in the case told their children to “minimally participate” in the Florida Standards Assessment for third grade by filling in their names, breaking the seals on the tests and then refusing to answer any questions.

Those parents believe state law gives them the right to tell their children not to answer questions on the test. But while the law spells out ways to advance that don’t require passing the assessment, the Florida Department of Education and school districts say that doesn’t give students the opportunity to refuse to take it.

Gievers, who seemed in an earlier hearing to sympathize with the parents, gave no clear indication of how she intended to rule on the request for an injunction.

“You’ve given me a lot to look at, and I plan to do this the right way,” she said.

But the hearing laid bare not only the legal questions at the heart of the case, but the philosophical ones: Is a report card based on a year’s worth of work a better measure of a student’s knowledge, or is an objective test the proper measure? Where is the balance between a parent’s right to control his or her child’s education and the state’s right to determine how to measure learning?