After highschool you have a couple options:

1. Technical school (usually called ‘college’)
2. University

Technical schools (colleges) are usually 2 yrs long, and give out ‘diplomas’. They usually teach practical subjects (like in trades etc). But also teach similar things as universities.

Universities usually are 4 yrs, and give out ‘degrees’. An ‘undergraduate degree’ is what you get in the first 4 yrs.

After you get an undergraduate degree, you can go back to university and get a graduate degree (also called a ‘Masters degree’). Usually that takes 1-2 yrs.

After you get a Masters degree, you can go back to university again, and get a PHD (also called a ‘doctorate’). This can take anywhere from 3-10 yrs.