LFA = TR X DPV
where:
"LFA" is the school district's local share;
"TR" is the school district's adopted tier one maintenance and operations tax rate, as described by Section 45.0032(a) for each hundred dollars of valuation; and
"DPV" is the taxable value of property in the school district for the current tax year determined under Subchapter M, Chapter 403, Government Code.
Tex. Educ. Code § 48.256