* The school's budget: Some schools use inexpensive, generic polishes, while others might opt for more specialized products.
* The school's cleaning service: If an external cleaning company is used, they'll have their preferred products. These might be whatever they get the best bulk deal on, or a product specifically designed for their processes.
* The type of furniture: Different materials (wood, laminate, metal) require different cleaning solutions. A polish suitable for wood might damage a laminate surface.
* Environmental concerns: Schools may prioritize eco-friendly, non-toxic products.
In short, there's no single answer. It's likely a variety of products are used across different schools, ranging from common household brands to specialized institutional cleaners.