Ideally, practically none. I support homeschooling and parochial education, but I'm not in favor of public funds going to schools which teach YEC.
I also believe that while no religious institution should be required to recognize same-sex marriages, LGBT students should have access to counselors that will help them rather than push anti-gay dogma or tell them to "repent" of their sexuality or gender. But that is where things start to get complicated logistically.
You could have party political officers installed at every educational institution like SU did with military units.
I'm sure you're being snarky here, but mental health really isn't a political matter.