WIY-
It does not have to be expensive to bring in experts. B”H the frum community has many talented individuals comprising a broad range of expertise. Often, all the school needs to do is to ask, and a professional will happily volunteer his or her time to the students.
One example is career day. 20-30 years ago, individuals like myself were asked by schools to come in and talk about our respective fields, professions, or businesses (only some actually had any affiliation with the school). Not a one thought of asking a fee. It’s called giving back, and it’s more in vogue now than ever.
The reason this is not happening today is only because the schools have stopped asking. They no longer want to bring professionals and businessmen into the classroom for fear that they may be looked to as role models rather than merely a necessary evil.