Realistic training in the real environment with a lot of sweat, dirt, challenging clientele and aircraft that leak a few juices that the pilot must manage and clean up might be a good starting point - And a bucket loud of Napisan to clean the stains out of the white shirts. Piston pilots have black stained shirts, turbine pilots have orange stained shirts.
Glossy photos of airliners in flying school promo material is false advertising.