(a) Subject to Subsection (b), the agency may conduct field testing of questions for any assessment instrument administered under Section 39.023(a), (b), (c), or (l) that is separate from the administration of the assessment instrument not more frequently than every other school year.
(b) Subsection (a) does not limit field testing necessary to develop new assessment instruments required under state or federal law.
(c) Before the beginning of each school year, the agency shall notify each school district regarding the required participation of the district in field testing activities during that school year.