A teacher aide shall be under the immediate supervision and direction of a certificated classroom teacher, with a reasonable physical proximity between the aide's work station and the teacher's work station, so that there is ready communication between teacher and aide and ease of supervision of the aide. Under such supervision, the teacher aide may engage in activities that include tutoring of individuals or very small groups of pupils as directed by the teacher.
Cal. Code Regs. Tit. 5, § 12067