School "B" will add classrooms and teachers.How about you discuss the situation without name calling.
School A, B , C are all rural schools that each have let’s say 3,000 students each and each school district has Elementary, MS and HS. And each school is full to capacity.
If 50% of the students in District A and 50% of the students from District C want to take there voucher to School B, which is already full.
How is that gonna work, logistically?
Schools "A & C" will either scale down OR they will up their game considerably. That's what happens when you have competition.