Participation is not a technical problem. A school can have perfect devices and perfect scheduling and still screen 240 students out of 489, because nobody told the students why.
Staff first
An all-staff presentation, in person and virtual, before screening week. Teachers need to know how to read the introduction script, what to say when a student asks a question, and what to do if a student gets upset in the room.
Mandatory one-to-one follow-ups for anyone who misses it. Not optional, and named to a person who will actually chase them. A teacher who has not been briefed will improvise, and improvisation at the front of a classroom is where a screening week goes wrong.
Include support staff. Paraprofessionals, front office, custodial, food service, bus drivers. When students are asked who they would go to, they name these people more often than schools expect.
Students next
Partner with the groups that already have the floor. Student leadership, ASB, honor society, Key Club, the GSA. Peer-to-peer messaging about mental health lands in a way an adult announcement does not.
This matters more for some students than others. Asked how comfortable they would be talking to various adults, Asian American and Pacific Islander students rated friends highly at 68 percent and teachers at 12 percent. For several populations in Unit 8, peers are the realistic route in. See Modules 8.7 and 8.8.
Let students design the messaging. Morning announcements, flyers, posts. Two things they should address directly: why this is happening, and what happens to their answers. Students assume the worst about data privacy unless somebody tells them otherwise, and a student telling them lands better than a principal telling them.
Critical Reflection. The student groups with the floor are not a random sample of your school. Who is not in ASB, and how does the message reach them?
The device rule
Every student engages with a device. Students who opt out of the screening complete the feedback survey instead, on the same device, at the same time.
Nobody sits visibly not participating. That is a dignity decision before it is a data decision, and it is also why SAFER's opt-out rate produces usable information instead of an empty row.