Where can I find used buses for export into El Salvador?

Question

school buses and partially damaged units

Answer 1

there are plenty in jersey city, NJ

also at ports or junkyards

Answer 2

Contact your local Unified School District.  They can tell you what they do with their outdated buses.  You should also contact your local transit station as they would also have buses that they would want to get rid off or point you in the right direction as to what they do with their old buses.  

Junkyards might have a lead as to where large items like buses are junked, so they might also be a good source of info.