All candidates for a certificate or license valid for an administrative or supervisory service, classroom teaching service or school service who apply for a certificate or license on or after December 31, 2013, shall have completed at least six clock hours, of which at least three hours must be conducted through face-to-face instruction, of course work or training in harassment, bullying and discrimination prevention and intervention, as required by section 14 the Education Law, which is provided by a registered program leading to certification pursuant to section 52.21 of this Title or other approved provider pursuant to Subpart 57-4 of this Title, except that candidates may complete the minimum six clock hours of course work or training entirely online through December 31, 2021 in response to the state of emergency declared by the Governor pursuant to an Executive Order for the COVID-19 crisis.