WASHINGTON — The Supreme Court on Wednesday seemed sympathetic to the arguments of a deaf student who sued his public school system for providing an inadequate education, a legal challenge important for other disabled students and their families.The question for the justices involves a federal law that guarantees disabled students an education specific to their needs. During 90 minutes in the courtroom, liberal and conservative justices suggested they were inclined to rule for the student, Miguel Luna Perez.His …