An Assistant Teacher is a professional who works with students to make sure they grasp the content during instructional time. They supervise students and reinforce that information through lunch or recess games outside of class time.

Help teachers prepare lesson plans
Set up necessary material for classes (e.g. projectors, chemistry sets)
Track student attendance and class schedules
Review material taught in class with individual students with learning challenges
Work with smaller groups of students for remedial teaching or reinforcing the learning process
Escort and supervise students in field trips and school activities
Make sure classrooms are safe and tidy before classes start
Assist teachers with various tasks, like grading assignments and informing parents of their children’s progress
Help students adjust, learn and socialize and report to teachers about possible behavioral issues