How can the system be changed so that people who don’t have the economic means to pay tuition are not left aside?

If all the economic resources were well distributed, if the corruption and smuggling didn't exist, and taxes were paid by everyone, it could be possible for higher education to be free and accessible to everyone. Afterward, we need to change the war budget to education budget to create more universities and stop spending money on weapons and the army. But after years of civil war, I think this is utopian...

Why is education cheaper in other countries even when our economy is among the best in the region?

Because besides to all the common problems that almost all Latin American countries have such as corruption, smuggling, drug trafficking, government theft, we have the guerrillas and the civil war. Sadly, all the money goes from education to war.

What is the role of SENA in higher education in Colombia?

Sena has an important role in the education of Colombia because provides technological careers that are free and quality programs for everyone. It became an excellent alternative for people not being able to start a career in a public university. Thank you Sena for your valuable work.