While it is true that subjects like physics and chemistry are typically scaled up, it's not in your best interests to study these purely on this. Likewise, lots of students think they should study 'easy' subjects to get a high score. Scaling aims to eliminate these discrepancies.

Is physics a high scaling subject?

Physics and Chemistry are the highest scaling sciences and scale significantly better than Biology, mainly because they contain a significant portion of numerical calculations.

What subjects get scaled up the most?

English was scaled down by about 2 points. A 30 raw score was bumped down to a 28. English usually gets scaled down every year.