the law imposes no restrictions upon the owners of the flats to make the resident owners/tenants of the flats state how many persons would be staying in a single flat. the owner/tenant of the flat has the sole discretion in this matter. the owner can, however, state precisely at the time of giving the flat on rent that only families should stay in it/married couples or impose any no. of conditions which are not restrictive and are not against the fundamental rights of the residents of the flats.
now the flats leased to the companies were leased out by persons who must have had agreements with those companies and the owners must be knowing full well who is staying in those flats.
now the committee can object to certain tenants living in these flats if all the other committee members are in agreement with them.
the academies must be owning some of those flats as you stated. the owner academies have not informed the committees, the committee members can always object to the acts omissions of those errant owners which are not in consonance with the society rules and regulations.
if the parents of those minor children have no problem, then this issue cannot be raised.
the security and safety of these children is the responsibility of the academy and in case of default, in case of child abuse etc. the academies would be responsible.
the committee members would also be held responsible if adequate security is not provided as per the charter of the society rules etc.
therefore, if you are letting this crowd be a part of your society, take extreme caution as in case of any crime/ offense being committed on the premises, the committee members could be interrogated, and in case of lapses, could be made a party in the proceedings.