P-3 is a special education service offered by the NYC Department of Education to private school students; basically, it’s free tutoring for kids who are deemed eligible. Eligibility is determined by a psychological evaluation conducted by the DOE without regard to income.
To provide P-3 services, one must be NY state certified and willing to work either: a) directly for the DOE on a 1099 tax form and receive your wages at least 6 weeks after the end of each month, or b) for a P-3 agency (such P3 Maven’s post) for less pay than the DOE offers, but on a W-2 tax form and (hopefully) every 2 or 4 weeks.
Also, most Yeshivos only allow P-3 services to be provided during afternoon hours (or at the child’s home or a P-3 center in the evening) which is a big drawback for mothers who wish to be home for their children.