Hi I am in stat board.
My HR dept provided these figures for us:

Grade Years Salary
G11 2-3 $3,000 - $4,500
G12 3-5 $3,500 - $6,000
G13 3-6 $5,500 - $7,000
G14 5-8 $6,500 - $9,000
G15 > 8 $8,500 - $12,000