Ours is basically two parts or three if in a city limits. Board of Couny commission can do upto 10 mils (1%), school board upto 10 mils; all based on appraised value, minus deductions (homestead, window, disabled, ect), and then flat fees, per property, like a small fire department fee, a trash collection fee, ect.
So, in theory, a property owner could easy be paying 3% of value per year, and if its a second/third, ect; it's not limited to 3.5% increase in appraised value per year; its market rate.
Nobody likes taxes, but I do understand the need. I just question some of the stuff; like completely rebuilding functional, but older schools. Repairs, updates, expansion, yes; but the building itself isn't really that related to the quality of education.
Edit: that value is rated on highest and best use; unless its ag exempt. So, if you have 80 acres, zoned intensive commercial, or dense res, the value per acre is higher, regardless of if it's a hunting woods.