Clarifying how substitute teachers may serve for extended periods.

HB 3337 clarifies rules for substitute teachers in West Virginia, primarily affecting school districts, principals, and substitute teachers themselves. The bill allows substitutes to remain in a classroom for the full school term if they've served continuously for over half the grading period, unless the principal certifies the regular teacher prepared them for the role. It also requires school districts to provide long-term substitutes with training on IEP and 504 plans (special education and accommodations). Additionally, the bill creates a new pathway for retired teachers to work as substitutes in areas with critical staffing shortages, subject to specific district policies and state approval.