Handling cow manure in school science laboratories: Can cow manure be used for practical activities in school science laboratories? Are there any regulations regarding handling cow manure?

Handling cow manure in school science laboratories: Can cow manure be used for practical activities in school science laboratories? Are there any regulations regarding handling cow manure?
Animal skeleton: One of our teachers can get a sheep skeleton from someone. The sheep died in a field and the bones are now devoid of any flesh.
Effect of catalyst and surface area on reaction rate: One of my teachers is doing the above mentioned prac for Yr 11 Chemistry. She has asked for saturated Oxalic acid solution.
Definition of "locked up" on MSDS: I am in the process of rearranging our chemical storage area.
Chemical Store: In my chemical store I have my hazardous and non-hazardous chemicals separate. Do we need to separate these or can they all go together ensuring there are no incompatibilities.
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?
Glutaric acid: I have found some old glutaric acid in my chemical store and would like to know if it is an approved chemical for use in schools.
Hydrochloric acid and ammonia reaction:
Ventilation in corrosives cupboard: Are there any regulations regarding ventilation in corrosives and flammables cupboards—we are getting a new building and the architects are asking me for the reg
Fume cupboards in senior chemistry labs: With the changes to the Chem course with the Australian Curriculum, and the increased emphasis on organic chem, what are the recommendations for the number