The law firm's primary area of practice is Texas public school and governmental law. Attorneys in the firm represent school districts and other governmental entities in a wide variety of courts and administrative agencies including the United States Supreme Court, United States Court of Appeals for the Fifth Circuit, United States District Courts, Texas trial and appellate courts, and the Supreme Court of Texas. The firm also advises and represents clients in governmental meetings and administrative hearings.

The firm frequently makes presentations on a wide variety of legal topics, conducts workshops in conjunction with local education service centers, and presents legal topics at school law seminars and conferences sponsored by nationally recognized educational organizations. The Law Offices of Robert E. Luna, P.C. is registered with the Texas Education Agency as a provider of State-required continuing education programs for school board members.

The present law firm was founded in 1996 upon the retirement of the late Earl Luna, who practiced Texas public school and governmental law for 47 years. He also served as a school board trustee and Board President for the Garland Independent School District.