Increased funding demanded by the state for student education expenses at Prairie Crossing Charter School in Grayslake has led to a lawsuit filed by two large elementary districts. Gurnee-based Woodland Elementary District 50 and Mundelein-area Fremont Elementary District 79 filed the lawsuit against the Illinois State Board of Education over a change in the formula that requires Woodland and Fremont to forward annual state aid to pay for students living within the districts’ boundaries who attend Prairie Crossing.