Section 5(3)(iii) in The Punjab School Education Board Employees (Punishment and Appeal) Regulations, 1978
(iii)An employee in respect of whom one of the penalties included in regulations 5(vi) was imposed, will on re-promotion count previous service in the higher grade under rule 4.4 of the Punjab Civil Service Rules Volume I, Part I, unless the order of punishment or the order passed on appeal directs otherwise.