enter the university?

It's correct.

Do a search at Yahoo for
"entered the university"
then
"was admitted to the university"
(quotations are important)
to see usage.

enter the university

It seems completely understandable to me. Yet I know of no one that uses it regularly to mean be admitted to the unversity, except perhaps journalists or biographers of famous people. It's one of those expressions I put with matriculate.

CJ

Two days ago, we learned "get in" to mean "become accepted for membership or chosen for office" in an English class. (certainly not as clear as matriculate)

The example given:

Neither Father nor Mother thought I would get in.

Maple,

Of course! get in. Just the expression I was looking for. That's even more common than be admitted. Thanks for mentioning it.

CJ

Do they have a different register?

I mean, to me "get in" seems to be very informal. I'd be surprised to come across it in a biography.

Or maybe am I wrong?

Exactly. Here are my estimates of register.

get in 1.5 - 2.5
be admitted 2.0 - 2.5
enter 2.5 - 3.0
matriculate 3.5

CJ

[Y]

Hi,

You guys may have 'gotten in', but I 'matriculated'. (It's been downhill ever since.)

Clive

I'm always confused about the use of matriculated. Doesn't it mean "enrolled"? I hear so many people use it as though it means "graduated." But you are only matriculated while you are IN school, right?