As heavy storms keep pounding California with torrential rains and a record Sierra snowpack is poised to melt and send rivers surging over their banks, more than a fifth of the state's 10,000 K-12 schools are at a high or moderate risk of flooding, an analysis of federal data by EdSource shows. | By Thomas Peele, Emma Gallegos and Daniel J. Willis EdSource As heavy storms keep pounding California with torrential rains and a record Sierra snowpack is poised to melt and send rivers surging over their banks, more than a fifth of the state's 10,000 K-12 schools are at a high or moderate risk of flooding, an