; (ii) increases throughout each teacher's career; and (iii) is at least commensurate with annual salaries for college-educated and experienced professionals in the region in which such agencies are located, as determined in accordance with procedures and requirements established by the Secretary. (C) Disparities in per-pupil expenditures Not less frequently than every 5 years, a State that receives assistance under this part shall examine and address fiscal inequities among schools and local educational agencies in the State, including by working with the Governor, members of the State legislature and State board of education (if the State has a State board of education), local educational agencies that serve schools in the quartile described in clause (i), and the public, to— (i) identify the quartile of schools serving the greatest number and percentage of students from low-income backgrounds; (ii) identify the average per-pupil expenditure of the quartile of local educational agencies with the greatest per-pupil expenditures in the State