(a) Except as provided by this section, English shall be the basic language of instruction in public schools.
(b) It is the policy of this state to ensure the mastery of English by all students, except that bilingual instruction may be offered or permitted in situations in which bilingual instruction is necessary to ensure students' reasonable proficiency in the English language and ability to achieve academic success.
(c) A school district may adopt a dual language immersion program for students enrolled in elementary school grades as provided by Section 28.0051.