This is probably already on Larian's to-do list, considering the most recent beta update included so many changes to attribute and ability effects, but the tooltips for STR/DEX/INT and the three "Way of..."/five "magic school" abilities don't seem to fully/correctly describe those stats' current effects. Specifically, there are five variables that these three attributes/eight abilities seem to affect:

1) STR/DEX/INT-based weapon damage
2) STR/DEX/INT-based weapon offense rating (i.e. to-hit chance)
3) STR/DEX/INT-based skill damage
4) STR/DEX/INT-based skill AP cost
5) STR/DEX/INT-based skill cooldown time