This is the 6435th most frequent Swedish word.
lär
"Is said to" or "is supposed to."
Here, 'lär' is used in the context of learning something, with the reflexive pronoun 'sig' indicating the subject is learning.
Hon lär sig spela piano.
She is learning to play the piano.
In this context, 'lär' is used to describe the act of teaching, where the teacher is the one imparting knowledge.
Lärare lär elever matematik i skolan.
Teachers teach students math at school.
Here, 'lär' is used to indicate hearsay or something believed to be true.