Schools in Garwin, Iowa, the US. Schools locations in Garwin, Iowa. Find the nearest schools locations, near you. All types of business services ATM Finance Funeral home Insurance School All schools in Garwin GMG Schools Administration School +1 641-499-2239 306 Park Street, Garwin, Iowa 50632 Write a review Phone Website Directions GMG Secondary School School +1 641-499-2005 306 Park Street, Garwin, Iowa 50632 Write a review Phone Website Directions