2. The system according to claim 1 , wherein the instructions, when executed, cause the processor to: associate a second mark and a second notation on the worksheet with a second word by: detecting, by the image-capturing sensor, a second indicator portion of the position-identifying pattern corresponding to a second mark in a second one of the indicator regions that is associated with a second word; and detecting, by the image-capturing sensor, a second note portion of the position-identifying pattern corresponding to a second notation in the note region, based on whether the second mark indicates that the second word was read incorrectly or correctly, determine a second reading assessment result for the second word; and include the second reading assessment result, the marks and notations associated with the second word, and information identifying where on the worksheet the markings and notations associated with the second word are located in the digital document file.
2. The system according to claim 1 , wherein the instructions, when executed, cause the processor to: associate a second mark and a second notation on the worksheet with a second word by: detecting, by the image-capturing sensor, a second indicator portion of the position-identifying pattern corresponding to a second mark in a second one of the indicator regions that is associated with a second word; and detecting, by the image-capturing sensor, a second note portion of the position-identifying pattern corresponding to a second notation in the note region, based on whether the second mark indicates that the second word was read incorrectly or correctly, determine a second reading assessment result for the second word; and include the second reading assessment result, the marks and notations associated with the second word, and information identifying where on the worksheet the markings and notations associated with the second word are located in the digital document file. 3. The system according to claim 2 , wherein the instructions, when executed, cause the processor to: after the first indicator portion is detected by the image-capturing sensor, associate all subsequently detected portions of the position-identifying pattern and the corresponding marks with the first word until the second indicator portion is detected; and after the second indicator portion is detected, associate all subsequently detected portions of the position-identifying pattern and the corresponding marks with the second word until another indicator portion is detected.