Texas Education Code, Chapter 21, section 21.159 Texas Education Code 21.0452 Chapter 21 Required Work Experience / Salary Section 21.104 G Texas Education Code §21.048 Chapter 21 of the TEC Education Code Subchapter J, Chapter 21, Subsection 21.463 Texas Education Code §21.458 21.044 and 21.054 Subchapters E Section 21.057 Section 21.160 Texas Education Code 21.0452 Section 21.104 Texas Education Code, Section 21.405 Subchapter C Texas Education Code Sections 21.044 and 21.462; Texas Education Code, Section 21.404 Section 21.451 Section 21.003 Chapter 21 of the TEC Texas Education Code Section 21.0452 TEC §21.451 Texas Education Code §21.048 G Section 21.404 Section 21.105 Texas Education Code, Section 21.404 G 21.044 and 21.054 Texas Education Code, Chapter 21 Section 21.055 Statute Texas Education Code, Section 21.404 Texas Education Code §21.458 Subchapter D Section 21.451, Education Code Section 21.401 Section 21.210 Texas Education Code, Section 21.307 Section 21.404 Texas Education Code (TEC) §21.404 Texas Education Code, Chapter 21, Subchapter F Texas Education Code Section 21.0452 Chapter 21.006 of the Texas Education Code