At a time when more Texas teachers are leaving the classroom, the state’s licensing board is considering a new certification exam that could help better prepare new teachers — and perhaps help keep them longer in the job.On Friday, the 11-member State Board for Educator Certification will vote on whether to adopt the Educative Teacher Performance Assessment, also known as the edTPA exam. This new licensing test, developed at Stanford University, requires teachers to submit answers to essay questions and provide a sample lesson plan, a 15-minute video of themselves teaching in the classroom and a report on their students’ ...