Teacher’s certification is a commonly searched term when people are attempting to find out more information about how to obtain a teacher certification. However, there is no such thing as a teacher’s certification. A teacher certification, on the other hand, is what you obtain by fulfilling the teacher certification requirements of a specific state. Though the possessive of teacher’s certification implies that the certification belongs to the teacher, this is not entirely the case. A Teacher’s certification gives a teacher the ability to work at public schools in a specific state for a given subject and grade level. However, a teacher certification will expire over time and it is important that all teachers pay attention to the expiration of their teaching credentials and renew these credential before their teach certification expires.