An appeals court on Thursday will weigh the 2014 ruling that sent shock waves through California school districts by striking down the tenure and seniority system for public school teachers. The ruling is on hold pending an appeal.

According to the Los Angeles Times, teacher unions and their allies will use Thursday’s hearing to state their case on reinstating various job protections that were tossed out in the landmark ruling.

In Vergara vs. California, L.A. Superior Court Judge Rolf M. Treu Treu sided with the plaintiffs: nine public school students who argued that the rules protecting teachers’ jobs endangered their constitutionally guaranteed right to a public education.