Oregon - School nurse qualifications: Staff qualifications and professional development
Oregon Administrative Rules 581-022-2220
(3) School districts which employ nurses to provide health services shall employ persons currently licensed to practice as Registered Nurses or Nurse Practitioners in Oregon…
Oregon Revised Statutes 336.201 Nursing services provided by district; report.
(3) In addition to the requirements of subsection (2) of this section, each school district is encouraged to have one registered nurse or school nurse for every 750 students in the school district.
Source: Oregon State Legislature