'There is no rule that you have to carry only one bag for cargo luggage. You can have multiple packages, but the total weight should be within that range only.'
The information provided in the response is incorrect. A passenger cannot check-in multiple packages within the permissible weight. Airlines stipulate the dimension of the baggage and the number of pieces of baggage allowed in each class.
For example, if the permissible allowance is 23 kgs, the airline will specify the dimension of the baggage, and mention the number of pieces allowed. Passengers are required to confine their luggage to the weight and size mentioned in the ticket, to avoid paying excess baggage charges.
Attaching a copy of baggage allowance specifications that come attached with the ticket.
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Coming to the question -
There are special allowances offered to international students by individual airlines. If someone is travelling overseas for education and have a valid student visa, hey can avail of special fares and baggage allowance offered by the airlines.
British Airways allows passengers travelling on a student visa to carry a total of 69 kgs of baggage. It includes 23 kgs of cabin baggage and 46 kgs of checked-in baggage.
Students flying by Air India are entitled to an extra piece of checked-in baggage of 23 kgs. The offer is valid for specific destinations, such as the UK, the USA, Europe, Australia, Far East Asia and South East Asian countries.
Qatar Airlines allows three pieces of checked-in baggage weighing 23 kgs per piece, for Indian students travelling to the US. And if the destination is Europe a student can carry 40 kgs baggage.
Indian students travelling to the UK, USA and Australia, flying Etihad, are entitled to a baggage allowance of three bags of 23 kgs each.