Final answer:
The Progressive movement had a significant impact on improving child labor and working conditions, resulting in the passing of laws that reduced the number of child laborers and improved literacy rates.
Step-by-step explanation:
The Progressive movement had a significant impact on improving working conditions, particularly in regards to child labor. The movement led to the passing of laws in several states that restricted the employment of school-aged children. These laws helped to reduce the number of children killed in industrial accidents and contributed to a decline in illiteracy rates. Overall, the Progressive movement's efforts to improve child labor can be evaluated as successful, earning a high grade.