Knorr also pulled her other children out of school , and most of them never advanced past the eighth grade .
Knorr refused to let Suesan leave the house and forced her to drop out of school .
Knorr also pulled Knorr 's other children out of school , and most of them never advanced past the eighth grade .
Knorr refused to let Suesan leave the house and forced her to drop out of school .