School are managed only on a self-financing basis and tuition fee is collected by them as fixed by the Government, and from and out of the said tuition fee, the salary is being paid to them. As per the condition imposed to the petitioner School, while granting permission to open English medium sections, the aided teachers cannot be used to take classes for unaided /English medium sections. In case, if the petitioner's request is accepted for including the students studying in English medium section, that would result in converting the English medium sections from self-financing one to aided one. As pointed out earlier, the School has not approached the authorities, seeking permission to open, aided English medium sections as contemplated under G.O.Ms.148 dated 20.07.2018. When they are continuing English medium sections only under self-financing scheme, the authorities were right in fixing the staff strength based upon the students studying in the aided Tamil medium sections alone.