A substitute teacher appointed under the provisions of R.S. 17:1216 shall not acquire any of the tenure rights or privileges provided for in R.S. 17:441 through R.S. 17:444 or in R.S. 17:461 through R.S. 17:463, unless the substitute teacher has subsequently been appointed to fill a regular vacancy and has the necessary qualifications.
La. R.S. § 17:1217