A number of our students attend here because they were expelled by other public and private schools. Parents who presently have children in the institution are an excellent source of information. Parents who do little or no investigation of an institution their child attends are always a concern. If necessary you can always do a follow up. Speak with Accrediting Associations regarding the academic standards.
Former employees are an excellent source of information.
This includes employees who have retired, chosen to leave and employees who were terminated. You know what levels of kashrus you observe. Talk with the kitchen personnel. Look to see if containers are properely marked for dairy, meat and pareve. Inspect dry storage and frozen storage.