Task 12: Clean up old KCTCS files

[William-Hill]

Description

Remove old KCTCS data files, scripts, and schema files that have been replaced by Bishop State equivalents.

Files to Delete

• data/kctcs_*.csv (all KCTCS data files)
• data/ar_kcts_with_zip.csv
• database_dumps/dump-Kentucky_*.sql
• ai_model/merge_kctcs_data.py
• kctcs_student_level_with_predictions_schema.json

Verification

• Grep for remaining kctcs, kentucky, ar_kcts references in code files
• Ensure no broken imports or file references

Plan Reference

See docs/plans/2026-02-14-bishop-state-rebranding-plan.md — Task 12

[William-Hill]

Completed - PR merged into rebranding/bishop-state epic branch.