The phrase "asserts that they know" is correct and usable in written English.
You can use it when discussing someone's claim or belief about their knowledge or understanding of a subject.
Example: "The researcher asserts that they know the solution to the problem based on their extensive studies."
Alternatives: "claims to know" or "maintains that they know".
Other student resistance behaviors reported were more active, such as "disruption," wherein a student may purposefully interrupt class, "student rebuttal," wherein a student asserts that they know what will work for best them, and the dreaded Appeal to Powerful Others, which would involve threats to take student complaints about a course to an authority figure, such as a chair or a dean.
But why is it so clear that God would have wanted to do this?… Creationists don't need to assert that they know what God would have had in mind if he had built the panda.
They are willing to assert that they know something of the way ahead and they are ready to share that knowledge.
Citing a number of backdated transactions and what he characterized as dubious documentation the defendants received from Mr. Madoff, the trustee asserted that they "knew or should have known" that Mr. Madoff was conducting a Ponzi scheme.
The people who worked with the youth in this particular cult ranged from former hippies to rigid discipline freaks, but I felt I could trust these people because they asserted that they knew more than my parents.
Rather, it vaguely describes "the political origins" of the dossier and asserts that "it was known by DOJ at the time that political actors were involved with the Steele dossier".
The plaintiffs assert that they did not know that their relatives were to be buried on top of construction debris.
Many of the people assert that they did not know they were going to be asked to join the Herbalife network.
While the Mets assert that they did not know Beltran was having surgery the next day and that he did so without their consent, Beltran issued a statement Thursday night saying he spoke to Mets General Manager Omar Minaya on Tuesday about the planned surgery and that Minaya "just wished me well".
