Use of lead in schools

Use of lead in schools: Use of lead and lead salts in schools: Is lead (solid, lead shot, salts) allowed to be used in Years 7 to 10? Are lead salts banned in some jurisdictions?

On your List of Recommended Chemicals for Science in Australian Schools, you say that lead nitrate can be used in Years 7–12. They are classed as 'high risk' substances with uncertain or unpredictable risk levels in Education QLD’s guidelines. I don’t, therefore, understand why lead and lead salts are included on your list?