Tricks Tricks:
To be fair, he was kicked out of class, not school. Two entirely different things. Also, he shouldn't have been kicked out of class if he wasn't being disruptive.
$1:
At this point, the pupil tells him: 'I think it's silly to have anything other than two genders, sir.'
The teacher then urges him: 'Could you please keep that opinion to your own house? Not in this school.'
The child asks the teacher why staff are allowed to air an opinion, while a pupil is apparently barred from doing so.
Then the teacher states: 'I am not putting my opinion out. I am stating what is national school authority policy.'
The child tells him this is 'not scientific whatsoever', while the teacher tells him 'not every policy is scientific'.
Keep that opinion in your own house ? It's like heresy these days.
Sure, keep 'being fair'.