 With the introduction of the SHRM-CP and SHRM-SCP certifications (competitors to PHR and SPHR), the number of physical/in-class providers has dropped significantly, particularly those who are channel partners of SHRM (Society for Human Resource Management).Online providers of PHR and SPHR exam prep courses have become popular due to their accessibility.Recertification for the PHR or SPHR can be done by re-taking the exam every three years, or by earning 60 recertification credits inside of their 3-year cycle.