Is the phrase are being able to incorrect?

Yes, the phrase "are being able to" is grammatically incorrect.

Here's why:

* "Being able to" is already a complete phrase. It means having the capacity or skill to do something.

* "Are" is a form of the verb "to be," used to express a state of being.

Combining "are" and "being able to" creates redundancy and makes the sentence grammatically awkward.

Here are some ways to correct the phrase:

* Use "can" or "are able to": "They can do it." "They are able to do it."

* Reword the sentence: "They have the ability to do it." "It is possible for them to do it."

Example:

Incorrect: "The students are being able to complete the assignment."

Correct: "The students are able to complete the assignment."

"The students can complete the assignment."

"The students have the ability to complete the assignment."