A train has passed, but the crossing gate stays down and the lights continue flashing. What should the school bus driver do?

AAMVA CDL Manual Section 10.4.2 (Gates), p. 10-8; 49 CFR 383.123(a)(2)(iii) (general knowledge-test topic only — does not itself state this operational detail); 49 CFR Part 380, Appendix D, Unit D1.6 (Railroad-Highway Grade Crossings)

A gate that will not rise is a known problem that drivers are specifically told not to improvise around, because the reasons it stays down, a second train or a broken signal, are exactly the ones that make driving around it dangerous. Calling dispatch keeps the decision with people who can check the situation and coordinate a safe resolution.