1. (a) No credit shall be given for less than 20 days of service in a school year.
2. (b) One day shall be the length of the school district's regular session, but, with the exception of SUNY and community college faculty members, in no event less than five hours. Anything in the foregoing notwithstanding, effective for service rendered on or after July 1, 1993, where the length of the full-time workday established for teaching assistants employed by a school district is less than the length of the school district's regular session, but is at least six hours, one day for the purposes of determining the annualized contract salary of members who are employed as teaching assistants by such district on other than a full-time per annum basis shall be the length of such full-time workday.
3. (c) Twenty days shall equal one month.

4. (d) Credit for more than 20 days shall be computed as follows:

   20 to 29 days = 1 month

   30 to 49 days = 2 months

   50 to 69 days = 3 months

   70 to 89 days = 4 months

   90 to 109 days = 5 months

   110 to 129 days = 6 months

   130 to 149 days = 7 months

   150 to 169 days = 8 months

   170 and above = 1 year

Credit for service shall be granted as follows in computing benefits: