Section 2A. Notwithstanding the provisions of section twenty-one of chapter thirty-one, the personnel administrator shall establish the following educational requirements for taking an examination for the following positions in the department of correction:—

An applicant for director of psychological research shall have a doctoral degree in psychology from an accredited college or university.

An applicant for principal psychologist shall have a minimum of a master’s degree in psychology from an accredited college or university.

An applicant for chief supervisor of psychiatric social work shall have a minimum of a master’s degree in social work from an accredited graduate school of social work.

An applicant for head psychiatric social worker shall have a minimum of a master’s degree in social work from an accredited graduate school of social work.