Requires assessing units to disclose and publish information relating to the use of a computer assisted mass appraisal system or other statistical formula or computer software at any step during the assessment of taxes on real property; requires assessing units not using a computer assisted mass appraisal system or other statistical formula or computer software at any step during the assessment of taxes on real property to verify that such systems, formula, or software were not used and explaining the methods used by such assessing unit to assess real property taxes.