Looking on the internet deeply has found these results:

go to university is the most popular phrase on the web.

go at university 1182,000 results on the web	go to university 120,300,000 results on the web More popular!
Some examples and use cases from the internet:	Some examples and use cases from the internet:
My dad wanted me to go to university. She was just about to go to university to study mathematics. I hope you passed second grade so you can go to university. We want our girls to go to University. Wants to go to university down south. You can go to university to study for law or medicine or... I still want to go to university. He says I could go to university a year early.	You can go to university to study for law or medicine or... She was just about to go to university to study mathematics. It isn't futile to go to university. He says I could go to university a year early. He is saving money in order to go to university. Wants to go to university down south. He left to go to university in France, because as a Jew, he couldn't go to university in Poland, and then he enlisted in the French military in World War II. So I completed my education, but I wanted to go to university.

go at university

1182,000 results on the web

go to university

120,300,000 results on the web

More popular!

You can go to university to study for law or medicine or...
She was just about to go to university to study mathematics.
It isn't futile to go to university.
He says I could go to university a year early.
He is saving money in order to go to university.
Wants to go to university down south.
He left to go to university in France, because as a Jew, he couldn't go to university in Poland, and then he enlisted in the French military in World War II.
So I completed my education, but I wanted to go to university.