However, the handbook is also intended for all teacher aides who do not speak the language of the students they are working with, including those teacher aides who speak only English. All teacher aides can use the information in the handbook in different ways, with the support of a coordinating teacher in their school (. SENCO, Syndicate leader, ESOL teacher, Literacy leader, Learning support teacher). The charts at the end of the handbook (pp 92-103) explain how to work with groups of students who speak the same first language as the teacher aide (first language or L1 groups), and.