The SPED trip designation is added to settings.
Users need to check Allow SPED Trips in Settings - General:
Scroll down and click
To make the SPED checkbox show up under Trip properties:
Once a trip is checked as SPED. It will only show up for SPED students in Find My Bus, Auto Assign, and Students bus schedule search:
When adding a student to a SPED Trip using the function below, only SPED students will show up:
You still can add any student to SPED trips using the "+1" icon and the "Manually Add Schedules" function.