[Grammar] Considered as/to be

"James is considered as a teacher."

"James is considered to be a teacher."

What is the difference?

The first is unnatural; the second is unlikely: he's either a teacher or he isn't.

You might hear

'James is considered by some to be the best singer in the choir'.

'James is considered to be disrespectful of authority.'

I don't like 'considered as'; I prefer 'thought of as'.

'James is thought of as a role model for his younger brothers.'

Many other answers are possible.

Rover

'Considered' means 'to regard' or 'to deem to be', which is about the same of 'thought of'.
Something that is considered or thought of may or may not be an absolute fact.
So, what is the difference between OP's two sentences?

tedmc said:

'Considered' means 'regarded' or 'deemed to be', which is about the same as 'thought of'.

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I have said what sounds natural to me.

Rover_KE said:

Many other answers are possible.

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I think 'seen as' and 'viewed as' are possible.

Not a teacher.