In order to earn certification to teach in public schools in Washington DC, prospective teachers must satisfy the requirements for initial licensure, which include completing a bachelor's degree and teacher preparation program, passing the required educator testing, and completing a criminal background check.
The Office of the State Superintendent of Education (OSSE) is the state education agency that oversees teacher licensure and credentialing. The following links should help guide you through the licensing process.
OSSE Application for Licensure Renewal
OSSE Directory of State-Approved Educator Preparation Programs
OSSE Educator Credential Renewal Requirements