N.Y. Comp. Codes R. & Regs. tit. 8, § 90.7
(1) Public librarian's professional certificates shall be granted to those who pay the statutory fee pursuant to Education Law, section 279 and:
(2) A public librarian's professional certificate issued before January 1, 2010 shall be continuously valid. A public librarian's professional certificate issued on or after January 1, 2010 shall be continuously valid, provided that the professional development requirements prescribed in subdivision (c) or (d) of this section are met.
(b) Conditional certificate.
(1) A holder of a librarian's certificate or license evincing the completion of professional training and college education in a degree course or courses of no less than five years of postsecondary study, issued by an agency located outside of the United States may apply for a conditional certificate. The applicant shall submit full documentation of all postsecondary study, of degrees or credentials awarded therefor, and of the librarian's certificate or license to be evaluated. If, upon review of such documentation, the department determines that the applicant's preparation is equivalent to requirements for a professional librarian degree from a library school which is registered by the State Education Department or which program is accredited by the American Library Association, a conditional certificate may be issued for a period of two years. Such conditional certificate shall be valid for appointment to a beginning level professional position. The conditional certificate may be reissued at any future date for one, and only one, additional two-year period upon presentation of evidence that the holder has completed, within the preceding two years:
(2) A holder of a graduate library degree from a library school outside New York State which is, at the time of graduation, a regionally accredited institution of higher education may apply for a conditional certificate. The certificate is issued for a period of two years. Such conditional certificate may be reissued at any future date for one, and only one, additional two-year period, upon presentation of evidence that the holder has completed, within the preceding two years:
(3) The applicant shall pay a statutory fee pursuant to Education Law, section 279 for the evaluation of credentials pursuant to this subdivision and the issuance of a conditional certificate.
(c) Professional development requirements for public librarian professional certificate holders employed by a library or library system.
(2) Professional development shall consist of instruction and/or activities, as pre-approved by the employing library, employing library system or the State Education Department, relating to:
(4) Professional development may be provided in:
(5) Professional development may be provided by:
(6) Up to 12 hours of the required 60 hours in professional development may include:
(iii) a supervised development project in a relevant content area for which no academic credit is awarded.
(d) Professional development requirements for public librarian professional certificate holders not employed in a library or library system.
Each holder of a public librarian professional certificate issued on or after January, 1, 2010, who is not employed by a library or library system, in order to maintain the continuous validity of such professional certificate, shall complete professional development in accordance with the requirements of subdivision (c) of this section, provided that the required 60 hours in professional development shall be reduced by 10 percent for each year, within the five-year period, that the certificate holder is not employed by a library or library system.
(e) Temporary certificate.
(1) As used in this subdivision, eligible applicant shall mean:
(a) Professional certificates.