The number of days of sick leave provided by this subchapter are minimums only, and nothing in this subchapter shall prohibit any school district from providing more days of sick leave or from having a more liberal policy for the administration of sick leave, including, but not limited to, the establishment of sick leave pools or banks and allowing school district employees who are husband and wife to each utilize the other's accumulated sick leave.
Ark. Code § 6-17-1208