Critically review articles about staffing ratios and effective class sizes based on funding

Critically review articles about staffing ratios and effective class sizes based on funding. Focus on either PK-12 or higher education. What are the industries’ recommended standards for staffing? Are there minimums and maximums? What about support staff like custodial, security, and food service? Are there standards available to give direction for what to expect? Submit a minimum five page paper in APA format with at least five references.