Education is not mainly a form of signalling.
Getting an uber expensive education is signalling, getting an education itself is not.
By poor third world country standards, all education is uber expensive.
Private education in the third world is quite inexpensive—cheap enough to be affordable to a substantial fraction of the poorest families—according to The Beautiful Tree ( https://www.amazon.com/Beautiful-Tree-Personal-Educating-Themselves/dp/1939709121 ).
Education is not mainly a form of signalling.
Getting an uber expensive education is signalling, getting an education itself is not.
By poor third world country standards, all education is uber expensive.
Private education in the third world is quite inexpensive—cheap enough to be affordable to a substantial fraction of the poorest families—according to The Beautiful Tree ( https://www.amazon.com/Beautiful-Tree-Personal-Educating-Themselves/dp/1939709121 ).