An assistant teacher supports the lead teacher by helping with instruction, classroom management, and organization. They work with students individually or in small groups to reinforce lessons and provide extra help. Assistant teachers also prepare materials, organize supplies, and assist with grading or displays. They help maintain a positive learning environment by supervising students, managing behavior, and supporting classroom routines. Through teamwork and communication, assistant teachers ensure that lessons run smoothly and that all students receive the support they need to succeed.