The big deal is you punish everyone's freedom for a minority.
Are you?
Of all the foodstuffs, pork is one of the most difficult to store properly. The meat can be a breeding ground for parasites, and of course must be cooked evenly to offset the risk. Once cooked, there is a range of temperatures where food becomes susceptible to bacteria; in the case of pork, that window is wider than any other meat, and bacteria will breed in pork faster than in other meats.
Now, if you look at the state of the public education system, you will find that it will take a hell of a lot of time, effort and money to maintain adequate facilities in public schools.
I now cannot go to a non-halal butcher in my area, all my food in the local university (which I'm thankfully not a student of) is halal meat only
Here's the problem: it's not about you.
Consider it from the butcher's perspective. They are typically small businesses relying on the local community to maintain a profit. As the demographics of that community change, that butcher must tailor products to suit public demand. They cannot reasonably shut an entire segment of their market out just because they don't want to be halal-certified. If they do, they will likely go out of business. Likewise the university - they must provide products to suit the market.
Furthermore, my local butcher is halal-certified. It doesn't bother me. And why not? Because you cannot taste the difference between halal meat and non-halal meat.
Let's imagine what Joe public is thinking.
Gee my son can't have his favourite meal of sausages and mash on Thursday anymore. Should I blame the school for ignoring my concerns (right) or those dark people who keep themselves to themselves with their funny demands (wrong but easier).
Let's imagine what Mohammed Q. Public is thinking:
Gee, my son comes home hungry because he cannot eat the food that the school serves. The school doesn't have the budget to provide a range of meals, and so have chosen to ignore their duty of care to my child and instead think that it is entirely appropriate to ask that I observe a different standard because it's easier than dealing with parents who feel threatened by a culture that they have made no effort to understand.
The more you try and manufacture multiculturalism, the worse it gets for everyone.
Ah, the mainstay of modern social and political conservatism: the assumption that any change is a threat to your values, because a world where modern and traditional values co-exist is inconceivable.