Are there any assessment item tagging software tools that handle rich passages, equations, and approval workflows?

Yes. A few assessment-item tagging / item-authoring platforms can handle rich passages, math/equations, and review/approval workflows. The exact fit depends on whether you need standards tagging, metadata tagging, item bank management, or full content authoring.

Commonly used options

• Questify / eAssessment platforms
  Often support rich text, embedded media, math via equation editors, and multi-step review workflows.

• TAO (Open Assessment Technologies)
  Strong for item authoring and delivery; supports rich content and math, and can be configured for workflow/approval processes.

• Renaissance / Learnosity item banks and authoring tools
  Typically support passages, equations, and collaborative content review in enterprise setups.

• NWEA / Item bank and assessment authoring ecosystems
  Usually support complex item types and workflow controls, though functionality varies by product and licensing.

• Alchemer / other enterprise content workflow tools used in assessment publishing
  Sometimes used for tagging/review pipelines, but may require customization.

Features to look for

If you’re evaluating tools, confirm they support:

• Passage-based items with shared stimuli
• Math equation rendering (e.g., MathML, LaTeX, Equation Editor)
• Rich text/HTML authoring
• Standards or rubric tagging
• Role-based review/approval workflows
• Versioning and audit trails
• Import/export formats like QTI, IMS, or proprietary XML/JSON

If you want something more specific

I can give you:

1. a shortlist by use case
2. a comparison table of leading tools
3. recommendations for K-12, higher ed, or certification/testing

If you tell me your context, I can narrow it down quickly.