The first time Jackie James’ boss used the word “layoffs” was the day before Valentine’s Day. James, a 5th and 6th grade teacher at Bricolage Academy in New Orleans, had loosely been following the news: She knew that the NOLA Public Schools district had committed an accounting error worth tens of millions of dollars, grossly overestimating how much operating money New Orleans schools would receive from both sales and property taxes.The city’s …