The second sentence is highly colloquial, it's a mix between "zur Uni gehen" and "an der Uni sein". The meaning is equivalent, but the second sentence honestly sounds like a person was unable to decide between two proper phrases and accidentially mixed them.
The Language Level symbol shows a user's proficiency in the languages they're interested in. Setting your Language Level helps other users provide you with answers that aren't too complex or too simple.
Has difficulty understanding even short answers in this language.
Can ask simple questions and can understand simple answers.
Can ask all types of general questions and can understand longer answers.
Can understand long, complex answers.
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