PA-28 Cherokee/Archer/Dakota/Pillan/Warrior
Flight Crew Multiengine; Flight Crew Commercial; Flight Crew Flight Instructor; Flight Crew Instrument
Flight Crew Last 90 Days 30; Flight Crew Total 240; Flight Crew Type 240
Training / Qualification; Situational Awareness
Aircraft Equipment Problem Less Severe; Ground Event / Encounter Loss Of Aircraft Control; Ground Excursion Runway
Flight Crew Regained Aircraft Control
Human Factors
Went out to local area/airport to practice landings with student. Landings were relatively uneventful at the airport due to direct headwind so departed back to [another airport]. Upon arrival; we entered the pattern and I was assisting the student in landing. We entered one approach; but due to sink-rate and turbulence performed a go-around and re-entered the pattern. I told student I only wanted him to control power and I would fly the rest. The pattern was performed correctly; we overshot final slightly; but corrected for it. Told student to start reducing power which he did. We came in over the numbers and sank abnormally fast. I performed a relatively quick round out and flare and we touched down on the main wheels on centerline. I applied brakes which resulted in them becoming locked. Released brake pressure however brakes remained locked. Started veering to the left; I determined that correcting would be unsafe and thus steered the aircraft between the runway edge lights to avoid damage and into the grass. No damage to aircraft or persons.
PA28 instructor pilot reported departing the runway on landing roll when the brakes locked after initial application.