Every game features a randomly generated schoolhouse, meaning notebook and item locations change every time.
The developer has stated that while v0.14 was the last scheduled major update before 1.0, additional sub-versions may continue to improve the game's state. Community & Modding Baldis Basics Plus
Along with regulars like Playtime and the Principal, new characters like Cloudy Copter (who blows wind down halls) and Dr. Reflex (who forces you into reflex tests) add variety. Baldis Basics Plus