Problems with longitudinal lumbering
(Play narration by clicking above.)
Complexity of data structures
- Existing state databases are complex
- Few researchers outside public agencies work with databases, because of the complexity of the structure
Assumptions of accuracy
- Multiple-identifier problems (e.g., when SSNs are used)
- Underpaid-clerk problem
- Underestimates cost of maintenance and accuracy (look to Social Security Administration for cost figures on database maintenance and upgrades: yes, theoretically it's possible to keep such a database secure and accurate, if you are willing to spend billions)
Privacy concerns with unit records
- Databases in K-12 forbidden by federal government for privacy reasons
- Students fear being tracked
- Recent reporting on federal government use of student databases (Krim, 2006)