Because of the disparities in district property wealth, spending per student varies widely, ranging from $2,112 to $19,333. Under the existing system, an average of $2,000 more per year is spent on each of the 150,000 students in the wealthiest districts than is spent on the 150,000 students in the poorest districts. The lower expenditures in the property-poor districts are not the result of lack of tax effort. Generally, the property-rich districts can tax low and spend high while the property-poor districts must tax high merely to spend low. In 1985-86, local tax rates ranged from $.09 to $1.55 per $100 valuation. The 100 poorest districts had an average tax rate of 74.5 cents and spent an average of $2,978 per student. The 100 wealthiest districts had an average tax rate of 47 cents and spent an average of $7,233 per student. In Dallas County, Highland Park I.S.D. taxed at 35.16 cents and spent $4,836 per student while Wilmer-Hutchins I.S.D. taxed at $1.05 and spent $3,513 per student. In Harris County, Deer Park I.S.D. taxed at 64.37 cents and spent $4,846 per student while its neighbor North Forest I.S.D. taxed at $1.05 and yet spent only $3,182 per student. A person owning an $80,000 home with no homestead exemption would pay $1,206 in taxes in the east Texas low-wealth district of Leveretts Chapel, but would pay only $59 in the west Texas high- wealth district of Iraan-Sheffield. Many districts have become tax havens. The existing funding system permits "budget balanced districts" which, at minimal tax rates,can still spend above the statewide average; if forced to tax at just average tax rates, these districts would generate additional revenues of more than $200,000,000 annually for public education. Property-poor districts are trapped in a cycle of poverty from which there is no opportunity to free themselves. Because of their inadequate tax base, they must tax at significantly higher rates in order to meet minimum requirements for accreditation; yet their educational programs are typically inferior. The location of new industry and development is strongly influenced by tax rates and the quality of local schools. Thus, the property-poor districts with their high tax rates and inferior schools are unable to attract new industry or development and so have little opportunity to improve their tax base. The amount of money spent on a student's education has a real and meaningful impact on the educational opportunity offered that student. High-wealth districts are able to provide for their students broader educational experiences including more extensive curricula, more up-to-date technological equipment, better libraries and library personnel, teacher aides, counseling services, lower student-teacher ratios, better facilities, parental involvement programs, and drop-out prevention programs. They are also better able to attract and retain experienced teachers and administrators. The differences in the quality of educational programs offered are dramatic. For example, San Elizario I.S.D. offers no foreign language, no pre- kindergarten program, no chemistry, no physics, no calculus, and no college preparatory or honors program. It also offers virtually no extra-curricular activities such as band, debate, or football. At the time of trial,