I offer that your check your rights under employment. I don’t have it front of me.
I can also tell you that employer might take measures to show your work is not satisfactory. For example, government jobs might have productivity measurements.
Perhaps check if your paygrade could be adjusted to account for not attending meetings (in order to keep your job).
Whenever separation occurs other than lack of work then unemployment requests the facts from you and employer.
Regarding Unemployment: worst case scenario is that you know that:
"Failure to perform your work to the satisfaction of your employer is not misconduct. The unemployment compensation act provides that an individual shall be disqualified (for unemployment) if it is found that he was discharged as a result of misconduct in connection with work." So I guess this says don’t let misconduct enter the equation because you could loose your unemployment benefits completely.
So the employer can take measures if your work is not up to par. But I think this situation isn’t that at all (I just provided the above for your information) but that the employer might have to provide a way for you to receive lectures by providing some reasonable accommodation.