When it comes to determining if a student is lying, cheating or not learning the material, there are several ways teachers can tell.
The first step is to look for evidence of any suspicious behavior. This could include signs that the student has been spending time on activities unrelated to classwork such as texting during lectures or looking at their phone instead of taking notes. Additionally, if students seem overly confident about their answers and turn in assignments with too many correct answers that don’t match up with previous work they have done, this may be an indication they are cheating or not doing the work themselves.
The second way teachers can determine if a student is lying or cheating is by talking directly with them about what happened and asking questions related to what was learned in class recently. If students struggle answering basic questions from recent lessons then it could indicate that either they were not paying attention during class discussions or did not do assigned readings/homework outside of school hours which would suggest unearned confidence when turning in assignments later on down the line as mentioned before..
Finally, another way teachers can assess whether a student has actually learned something from their classroom instruction involves giving assessments such as quizzes and tests where multiple choice options are removed so only open-ended responses remain; this will ensure no one else had access to providing “correct” answers for them ahead of time since these require more thought than just selecting pre-defined choices off a list provided beforehand! Ultimately though - regardless how you go about identifying whether someone has lied/cheated - being able to trust your pupils' honesty & integrity should always be top priority when teaching any subject matter so please remember: never assume anything until proven otherwise!