(Portland, OR)  --  The City Auditor's Office says Portland's 35-dollar Art Tax is funding art teachers in the public schools, but collections are falling short.  The new audit also says administrative costs are higher than anticipated and oversight is less than what was promised.  The audit says because fewer Portlanders than expected are paying the annual Art Tax, collections are only at eight million, rather than 12-million dollars per year.  Revenue Division Director Thomas Lannom told the "Portland Tribune" that work is underway to address the issues.