The Morrill Acts of 1862 and 1890 established Land-Grant Universities to focus on the teaching of practical agriculture and science in contrast to the historic practice of higher education focusing on an abstract liberal arts curriculum.
Today, there are 76 Land-Grant Universities in the US, with primary support and research funding from BigAg (like Monsanto, Dow, BASF, Bayer and Syngenta). All our Extension Agents are educated at Land-Grant Universities, and are biased in favor of BigAg, because that's what they have been taught.
Thus, it is with some trepidation that I'm sending soil samples to Virginia Tech. I did that 6 years ago, and although I no longer have the results copy, I recall it was heavy on synthetic NPK application. No mention of organic matter, or growing organically.
To be fair, 99% of what the Extension Service offers is wonderful (and free) information, everything from raising rabbits to home canning safety.
Extension is an educational outreach program of Virginia's land grant
universities: Virginia Tech and Virginia State University are a part of the
national Cooperative State Research, Education, and Extension Service, an
agency of the United States Department of Agriculture (USDA).
Routine soil testing is free through Virginia Extension Service, plus an additional (optional) $6 per sample to test for soluble salts and organic
matter. I don't remember if those additional tests were available 6
years ago, or I just didn't have the money. With 19 acres, I need soil
tests in several areas.
One of these days I hope to get a full-blown professional soil test done by AgLabs. Their focus is on biological agriculture, not industrial agriculture.
Here's a List of Land-Grant Universities in the US.