If it's just a general 'hey, Take your education seriously, yadda yadda' sort of thing, That would be fine, other than the fact that it will take away class time from actual teaching.
Personally, I think that unfortunately, a lot of parents out there don't put forth any effort to their child's education (among other things), and for those kids, this might be a positive message. Will it actually accomplish anything? probably not.
Unfortunately, I would put money on it not just being the above.
Now if it turns Political, pushes any agenda, or ANYTHING outside outlining the facts that support children and parents taking education seriously and putting work into it, then yes, it's not a good idea at all.
If the words 'nationalized', 'healthcare', or 'government support' come up there at all....
More than likely, it'll be a push for some or many of his agendas, with a 'save the children' overtone being used to feed it to the masses by the gallon...
Due to the fact that it has a very SLIM chance of only being the first, and a very LARGE chance of being the second, I agree that this should not be shown in public schools.