Section 6(2)(a) in U.P. Board of Secondary Sanskrit Education (Appointment and Conditions of Service of Heads of Institution, Teachers and other employees of the Institutions Rules, 2009
(a)Fifty per cent of the total number of the sanctioned posts in lecturer's grade shall be reserved for promotion from amongst the teachers working in the institution in L.T. Grade and promotions shall be made subject to availability and eligibility of such teachers for promotion.