 The German attitude to underground education varied depending on whether it took place in the General Government or the annexed territories . The Germans had almost certainly realized the full scale of the Polish underground education system by about 1943 , but lacked the manpower to put an end to it , probably <unk> resources to dealing with the armed resistance . For the most part , closing underground schools and colleges in the General Government was not a top priority for the Germans . In 1943 a German report on education admitted that control of what was being taught in schools , particularly rural ones , was difficult , due to lack of manpower , transportation , and the activities of the Polish resistance . Some schools semi @-@ openly taught unauthorized subjects in defiance of the German authorities . Hans Frank noted in 1944 that although Polish teachers were a " mortal enemy " of the German states , they could not all be disposed of immediately . It was perceived as a much more serious issue in the annexed territories , as it hindered the process of Germanization ; involvement in the underground education in those territories was much more likely to result in a sentence to a concentration camp . 
