A teacher in the Iola-Scandinavia School District was the person killed in the massive pile-up Sunday on I-41 in the Neenah area. Winnebago County Sheriff John Matz says 30 year old Andrew Schefelker of Oshkosh died in the chain-reaction crashes that happened in white-out conditions. Schefelker was a middle school/high school science teacher for Iola-Scandinavia. The pile-up Sunday involved 131 vehicles, with a majority of them said to be totaled. Authorities still have not determined what started the pile-up, as their investigation continues.