From international food festivals and popcorn sales to fun runs and penny wars, many educators are taking matters into their own hands to raise much-needed funds. With nearly half of public school funding nationwide coming from local taxes, annual budgets vary drastically from one school district to another. According to the National Center for Education, funding can range from less than $4,000 per student in the least affluent areas to more than $15,000 per student in the wealthiest districts. In…