The purpose of this Act is to protect and to benefit the public by setting standards of qualifications, education, training and experience for those who seek to engage in the independent practice of clinical social work and in the practice of social work and to promote high standards of professional performance for those engaged in the independent practice of clinical social work and in the practice of social work in the State of Illinois. Such practice is hereby declared to affect the public health, safety and welfare and should be subject to regulation in the public interest.