(a) For each student in average daily attendance, not including the time students spend each day in special education programs in an instructional arrangement other than mainstream or career and technology education programs, for which an additional allotment is made under Subchapter C, a district is entitled to an allotment equal to the lesser of $6,160 or the amount that results from the following formula: A = $6,160 X TR/MCR
where:
"A" is the allotment to which a district is entitled;
"TR" is the district's tier one maintenance and operations tax rate, as provided by Section 45.0032; and
"MCR" is the district's maximum compressed tax rate, as determined under Section 48.2551.