Writing either a Praxis Exam or the CEPT Exam should not affect your future ability to work in other provinces. While some provinces require the CETP Exam currently, all provinces and territories are signatories to the Canadian Free Trade Agreement (CFTA) which allows for inter-provincial labour mobility. The CFTA requires that workers registered in a regulated occupation in one jurisdiction be able to work anywhere in Canada without significant additional training, experience, examinations, or assessment.