Section 8(3)(b) in The Punjab Privately-Managed Recognised Schools Employees (Security of Service) Rules, 1981
(b)If his work or conduct has not been, in its opinion, satisfactory, it may, -(i)dispense with his services; or(ii)extend his period of probation by six months at a time and thereafter pass such orders as it could have passed on the expiry of the original period of probation :