Text stimulus (network-diagram): Network diagram titled 'Teacher Reallocation After a New Magnet School Opens.' Locations: New Magnet School in the center. Surround it with School B, School C, and School D. Arrows from School B to the magnet labeled '2 experienced teachers,' from School C labeled '3 experienced teachers,' and from School D labeled '1 experienced teacher.' Additional evidence: a separate School A connected by a dashed line labeled 'shared advanced-course partnership, no staff transfer.' The display includes a small legend: solid arrow = staff transfer; dashed line = instructional partnership. What is the strongest systemwide evaluation question after the new magnet opens?