Certificates of Proficiency are typically one to two semesters in length. The Certificate of Proficiency in Early Childhood Development provides coursework for students desiring to pursue the CDA-credential. The Certificate of Proficiency in Emergency Medical Technician prepares students to take the National Registry Emergency Medical Technician Examination. Certificates of Proficiency in Computer Information Systems Technology are offered in the areas of computer maintenance and networking technology. »Certificates of Proficiency in Welding are offered in the areas of structural welding and pipe welding. A Certificate of Proficiency in Petroleum Technology is also offered is also offered.