Ableism is the set of assumptions and designs that treat one way of moving, thinking, communicating and working as ordinary, and everything else as an exception to be requested, documented and approved. At the level of a public system, racism works through the same mechanism: rules, defaults and habits shaped around one set of conditions, applied to people whose conditions are different, producing results that follow the difference rather than the rule.
Neither needs a person with bad intentions to operate. Both are carried in ordinary working material: the form that assumes a stable address, the assessment that assumes the person speaks for themselves in English, the appointment slot that assumes a weekday off, the standard that reads family involvement as support or as interference depending on how the family behaves in a meeting. Most of what a division does is built out of that material, and most of it was built by people trying hard to be fair.
What makes this module harder than either topic alone is that people do not meet these patterns one at a time. A man with a brain injury who speaks Somali at home, a grandmother caring for a grandchild with a developmental disability in a household where three languages are spoken, a Black teenager whose behavior is recorded as a conduct problem in one setting and as a disability need in another, and a farmer forty miles from the nearest assessor are not four versions of the same problem. Each meets a specific combination of design decisions, and the combination can produce something neither pattern, taken alone, would have predicted.
This program uses the intercultural development continuum to describe movement: Denial, Polarization, Minimization, Acceptance, Adaptation and Integration. Minimization is the most comfortable place for a public agency to sit, because it sounds exactly like fairness — the rules are the same for everyone, so the results must be fair enough. Moving toward Acceptance means letting a difference in results be real and worth understanding. Moving toward Adaptation means changing the design once you understand it. None of that is a label about you, and nothing in this program is recorded about any individual.